News #
You're a journalist or more generally a person who wants to know what's going on in the Tor network? We're collecting unusual events in the Tor network together with any insights we have into what we think has happened in the metrics-timeline Git repository.
This year #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2026-03-09 | snowflake |
Update snowflake-01 bridge to tor 0.4.9.5
|
| 2026-03-05 | snowflake |
Update snowflake-02 bridge to tor 0.4.9.5 for a metrics issue.
issue issue |
| 2026-02-28 to present | Iran |
Internet shutdown in Iran.
comment BBS thread |
| 2026-02-10 | snowflake |
Update snowflake-01 bridge to tor 0.4.8.22 for a metrics issue.
issue |
| 2026-01-28 |
Release of tor 0.4.8.22. Includes a change to count consensus downloads only after they have completed. Before this, incomplete consensus downloads (such as could be caused by the blocking of Tor) would inflate apparent user count statistics.
announcement release notes issue |
|
| 2026-01-13 to 2026-01-17 | Uganda |
Internet shutdown in Uganda during general election.
issue OONI findings |
| 2026-01-08 to 2026-01-27 | Iran |
Internet shutdown in Iran.
issue BBS thread IODA graph |
2025 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2025-12-21 | snowflake |
Planned maintenance on the snowflake-01 server for verification of boot media \#3.
issue |
| 2025-12-21 | snowflake |
Planned maintenance on the snowflake-01 server for verification of boot media \#2.
issue |
| 2025-12-12 | snowflake |
Planned maintenance on the snowflake-01 server for verification of boot media \#1.
issue |
| 2025-12-12 | snowflake |
Planned maintenance on the snowflake-01 server for failing disk (again).
issue |
| 2025-11-21 | snowflake |
Planned maintenance on the snowflake-01 server for failing disk.
issue |
| 2025-09-20 to 2025-09-21 | Bridges snowflake website |
DNSSEC outage preventing resolution of torproject.org and torproject.net domains. This affects snowflake as well as the Tor Project website and some bridge distribution channels.
issue |
| 2025-08-20 | snowflake |
The Snowflake broker starts zeroing out the count of daily unique proxy IP addresses. Before this, only *new* proxy IP addresses (new since the last broker restart) had contributed to the count each day.
issue |
| 2025-08-20 | snowflake |
The Snowflake broker starts doing client IP address geolocation for ampcache rendezvous.
issue |
| 2025-08-02 to 2025-08-13 | snowflake |
Outage of the snowflake-02 bridge, caused by a hardware failure.
issue |
| 2025-06-26 to 2025-07-04 | Togo obfs4 vanilla |
Partial blocking of Tor directory authorities and default obfs4 bridges in Togo during protests.
issue |
| 2025-06-18 to 2025-06-21 | Iran |
Network shutdown in Iran.
effects on Snowflake BBS thread NTC thread |
| 2025-06-10 | conjure meek moat snowflake |
Temporary outage of CDN77 domain fronting.
issue |
| 2025-06-05 | Belarus webtunnel |
Removed WebTunnel from Connection Assist in Belarus.
merge request |
| 2025-06-05 | China webtunnel |
WebTunnel becomes the primary transport in Connection Assist in China.
merge request |
| 2025-06-05 | Myanmar webtunnel |
WebTunnel becomes the primary transport in Connection Assist in Myanmar.
merge request |
| 2025-06-05 | Turkmenistan meek obfs4 snowflake |
Snowflake becomes the primary transport in Connection Assist in Turkmenistan.
merge request fix commit |
| 2025-04-28 | Turkmenistan snowflake Unknown |
Sustained large increase in bridge users from Turkmenistan, especially Snowflake, from near zero to over 5,000.
comment bridge users graph anti-censorship team meeting discussion April 2025 Snowflake Daily Operations update |
| 2025-01-25 | Belarus |
Presidential election in Belarus.
relay graph bridge graph |
2024 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2024-12-16 to 2024-12-20 | snowflake |
The snowflake-broker.azureedge.net CDN configuration is non-functional, as part of the transition to a new broker.
comment graph |
| 2024-11-25 | Russia snowflake |
Migration of the Snowflake broker to a new host at a different IP address. Standalone proxies erroneously continue to poll the old broker. NAT behavior self-testing is briefly disrupted.
issue DNS change issue tor-relays post |
| 2024-11-06 to 2024-11-21 | Russia snowflake |
Blocking of Snowflake DTLS connections in Russia.
issue BBS thread NTC thread |
| 2024-09-30 | snowflake |
Redeployed the Snowflake probetest with another fix to NAT type testing, aimed at reducing the number of instances of "restricted".
issue |
| 2024-09-18 | Bridges |
Bridge distribution transitions from BridgeDB to rdsys.
comment mailing list post |
| 2024-09-10 | snowflake |
Redeployed the Snowflake probetest with fixes to NAT type testing, aimed at reducing the number of instances of "unknown".
issue |
| 2024-08-22 to 2024-08-23 | snowflake |
Outage of the Snowflake broker.
issue |
| 2024-06-18 | snowflake |
Release of version 0.8.3 of the Snowflake proxy WebExtension, hoped to restore proxy capacity with its fixed consent prompt.
comment graph |
| 2024-06-10 | Bridges |
The bridge authority upgrades to tor version 0.4.8.12 and begins rejecting bridges running version 0.4.7.
mailing list post |
| 2024-06-09 to 2024-06-13 | Algeria |
Shutdowns during university exams in Algeria.
issue blog post |
| 2024-05-30 to present | Myanmar |
Blocking of VPNs in Myanmar. Bridge users increase.
issue |
| 2024-05-14 to present |
High load leading to network performance issues.
status.torproject.org forum post |
|
| 2024-05-11 | snowflake |
Loss of about 60,000 WebExtension Snowflake proxies, after the release of version 0.8.2 of the proxy WebExtension, the first release available for Chrome adding a consent prompt that existing users didn't notice.
issue |
| 2024-05-02 |
Release of Orbot for Android 17.2.1-RC-2-tor-0.4.8.7, the first release of Orbot 17 to appear on the Google Play Store. Orbot Snowflake proxies (kindness mode) increase.
release graph of Snowflake proxies |
|
| 2024-04-08 | snowflake |
Loss of about 15,000 WebExtension Snowflake proxies, after the release of version 0.8.0 of the proxy WebExtension, which adds a consent prompt that existing users didn't notice. Version 0.8.0 was released only for Firefox, not for Chrome.
issue |
| 2024-03-29 to 2024-04-24 | snowflake Unknown |
Temporary reductions in users of the snowflake-01 bridge, with simultaneous increases in users of the snowflake-02 bridge.
issue forum post |
| 2024-03-16 to 2024-04-08 | snowflake |
Version 0.7.3 of the Snowflake WebExtension is removed from the Firefox Add-ons store because of a policy change. Version 0.8.0 adds a consent prompt and is re-added to the store.
issue |
| 2024-03-15 | snowflake Unknown |
The Snowflake bridges suddenly recover a large amount of bandwidth, two weeks after the Fastly domain fronting change of 2023-03-01.
mailing list post |
| 2024-03-06 | moat snowflake |
Release of Tor Browser 13.0.11, with workaround for the domain fronting change of 2024-03-01.
blog post Snowflake merge request Moat merge request |
| 2024-03-01 | moat snowflake |
Fastly stops supporting domain fronting. This affects Snowflake, Moat, and Connection Assist.
issue pre-announcement in November 2023 forum post bandwidth graphs |
| 2024-02-17 | snowflake |
Restart of snowflake-01 bridge for system upgrade
comment |
| 2024-02-17 | snowflake |
Restart of snowflake-01 bridge in preparation for upgrades
comment |
| 2024-02-09 |
Release of Orbot for Android 17.2.1-RC-1-tor-0.4.8.7.
release |
|
| 2024-02-08 to present | Pakistan |
Shutdowns on mobile ISPs in Pakistan on Election Day.
Cloudflare Radar tweet |
| 2024-02-04 to 2024-02-07 | Senegal |
Shutdown of mobile services in Senegal during protests.
article |
| 2024-01-31 to 2024-02-02 | Russia OR |
Plain Tor is temporarily unblocked in Russia.
NTC thread OONI chart |
| 2024-01-22 | snowflake |
Restart of snowflake-01 bridge for configuration and kernel updates
comment |
2023 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2023-12-21 | Bridges |
Release of Tor Browser 13.0.8. Fixes the problem of pluggable transports not running on Windows 7 and Windows 8, except for Snowflake.
blog post issue merge request |
| 2023-12-19 | Bridges |
Release of Tor Browser 13.0.7. Pluggable transports don't work with Windows 7 and Windows 8.
blog post issue |
| 2023-12-17 | snowflake |
Restart of snowflake-01 bridge for test of configuration changes
|
| 2023-12-15 | snowflake |
Upgraded tor from 0.4.8.8 to 0.4.8.10 on the snowflake-01 bridge. Fixes the bug that made user counts by country more imprecise.
comment graph monthly update |
| 2023-12-15 | snowflake |
Upgraded tor from 0.4.8.8 to 0.4.8.10 on the snowflake-02 bridge. Fixes the bug that made user counts by country more imprecise.
comment |
| 2023-12-08 |
Release of tor 0.4.8.10. Fixes TROVE-2023-007 affecting exit relays with Conflux. Fixes the bug that caused incorrect counting of pluggable transport users.
announcement |
|
| 2023-11-21 | snowflake |
Restarted the snowflake-02 bridge for a performance enhancement.
comment |
| 2023-11-21 | snowflake |
Restarted the snowflake-01 bridge for a performance enhancement.
comment |
| 2023-11-16 | Relays |
Removal of about 1,000 "ATOR" relays.
blog post blog post graph |
| 2023-11-07 | snowflake |
Restarted the snowflake-02 bridge for a performance enhancement. Upgraded tor from 0.4.8.6 to 0.4.8.8.
comment |
| 2023-10-20 | snowflake |
Restart of snowflake-01 bridge for Debian 11.8 upgrade. Upgraded tor from 0.4.8.6 to 0.4.8.7.
comment |
| 2023-10-12 |
Release of Tor Browser 13.0. First stable release with Conflux.
blog post tor-relays post |
|
| 2023-10-05 | snowflake |
Release of Orbot 17.1.0-RC-2-tor.0.4.7.14, again changing the domain front to attempt to work around Snowflake connection problems.
release commit |
| 2023-10-04 | snowflake Unknown |
The snowflake-02 bridge suddenly recovers a large amount of bandwidth, after two weeks of low usage following the domain front change of 2023-09-20.
mailing list post |
| 2023-10-03 | snowflake |
Upgraded tor from 0.4.7.13 to 0.4.8.6 on the snowflake-01 bridge. As with the upgrade on snowflake-02 on 2023-09-24, this causes the reporting of spurious OR protocol users.
comment mailing list post comment monthly update |
| 2023-09-28 | snowflake |
Release of Orbot 17.1.0-RC-1-tor.0.4.7.14, with an alternative domain front to attempt to work around Snowflake connection problems.
release commit |
| 2023-09-26 | snowflake |
Release of Tor Browser 12.5.5, with an alternative domain front to attempt to work around Snowflake connection problems.
blog post merge request |
| 2023-09-24 | snowflake |
Upgraded tor from 0.4.7.13 to 0.4.8.6 on the snowflake-02 bridge. As the result of an apparent bug, the bridge starts reporting a number of OR protocol users about equal to the number of Snowflake users.
mailing list post about upgrade mailing list post about metrics problems core Tor issue metrics issue |
| 2023-09-24 | snowflake |
Release of Tor Browser 13.0a5, with an alternative domain front to attempt to work around Snowflake connection problems.
blog post merge request |
| 2023-09-21 | snowflake Unknown |
The snowflake-01 bridge suddenly recovers a large amount of bandwidth, about 24 hours after the domain front change of 2023-09-20 started to lower the number of users.
mailing list post |
| 2023-09-20 | moat snowflake |
The front domain used by Snowflake, Moat, and Connection Assist starts sometimes resolving to a different CDN, which makes these services stop working for some users. The snowflake-01 bridge drops to about half its normal number of users; the snowflake-02 bridge drops almost to zero. There would later be sudden partial recoveries of usage on snowflake-01 at 2023-09-21 13:10:00 and snowflake-02 at 2023-10-04 11:40:00.
forum post about Snowflake forum post about Moat and Connection Assist |
| 2023-09-19 to 2023-10-31 | Azerbaijan |
Blocking of TikTok in Azerbaijan.
tweet about start tweet about end |
| 2023-09-19 to 2023-09-25 | Azerbaijan |
Blocking of Google Play Store in Azerbaijan.
tweet |
| 2023-09-04 to 2023-09-09 | United States Relays Unknown |
Unexplained spike in relay users from the US.
issue |
| 2023-08-27 to 2023-08-30 | snowflake |
Outage of the snowflake-02 bridge caused by a temporary network disconnection at the network host. Client polls at the broker increase and traffic is diverted to snowflake-01.
mailing list post article status page |
| 2023-08-23 to 2023-12-08 | Bridges |
A bug in tor 0.4.8.4 causes misattribution of about half of pluggable transport users to the plain Tor protocol in bridges that upgrade to this version. The bug is fixed in tor 0.4.8.10.
issue issue merge request |
| 2023-08-23 |
Release of tor 0.4.8.4, with new Conflux and anti-DoS proof-of-work features.
announcement |
|
| 2023-08-08 to present | Jordan |
Blocking of Grindr in Jordan.
OONI report |
| 2023-08-05 to present | Iraq |
Blocking of Telegram in Iraq.
Kentik report |
| 2023-08-03 | Turkmenistan meek snowflake |
Make meek the first choice in Connection Assist for Turkmenistan, and changed the meek front domain.
merge request |
| 2023-07-18 | Turkmenistan OR |
Blocking of the default Tor client TLS fingerprint in the AGTS ISP in Turkmenistan.
comment relay users graph |
| 2023-07-18 | snowflake |
Restarted snowflake-server on the snowflake-02 bridge with num-turbotunnel=8.
comment |
| 2023-07-18 | snowflake |
Restarted snowflake-server on the snowflake-01 bridge with num-turbotunnel=8.
comment |
| 2023-07-18 | snowflake |
Restarted snowflake-server on the snowflake-01 bridge with num-turbotunnel=1.
comment |
| 2023-07-01 | snowflake |
Restarted snowflake-01 bridge after testing performance optimizations.
comment |
| 2023-06-30 |
The number of allowed relays per IP address (AuthDirMaxServersPerAddr) is increased from 2 to 8.
announcement issue |
|
| 2023-06-29 | snowflake |
Restarted snowflake-01 bridge to test an optimization.
comment |
| 2023-06-29 | snowflake |
Restarted snowflake-01 bridge to test an optimization.
comment |
| 2023-06-29 | webtunnel |
Announcement of WebTunnel availability.
announcement |
| 2023-06-29 | snowflake |
Restarted snowflake-01 bridge to test an optimization.
comment |
| 2023-06-28 | snowflake |
Restarted snowflake-01 bridge for a profiling change.
comment |
| 2023-06-12 to 2024-05-06 | Germany Relays Unknown |
Increase in relay users from Germany.
issue graph forum thread |
| 2023-06-05 to 2023-06-07 | Senegal |
Blocking of mobile Internet in Senegal.
article |
| 2023-06-01 | conjure |
Announcement of Conjure availability.
announcement BBS thread |
| 2023-06-01 to present | Senegal |
Blocking of social media in Senegal.
article OONI report |
| 2023-05-31 | snowflake |
Release of Orbot 17.1.0-BETA-2-tor.0.4.7.11.
release |
| 2023-05-22 | snowflake |
Restarted the snowflake-01 bridge for an upgrade.
comment |
| 2023-05-21 | snowflake |
Restarted the snowflake-02 bridge for an upgrade.
comment |
| 2023-05-12 to 2023-05-14 | China snowflake |
Block of Snowflake default front domain in China.
issue BBS thread forum thread |
| 2023-04-26 to present | Brazil |
Block of Telegram in Brazil.
OONI report |
| 2023-04-23 to 2023-04-25 | Sudan |
Internet outage in Sudan.
liveblog Wikipedia |
| 2023-04-19 | China obfs4 snowflake |
Changed the recommended transport in Connection Assist in China from obfs4 to snowflake.
comment commit |
| 2023-04-12 | snowflake |
Orbot begins a release rollout of version 17.0.0-RC-1-tor.0.4.7.11. First release of Orbot to include the snowflake-02 bridge along with the existing snowflake-01. Has a change to the Snowflake DTLS fingerprint (removes Hello Verify Request) to mitigate reported blocking in Russia.
release Orbot commit adding snowflake-02 IPtProxy commit upgrading Snowflake |
| 2023-04-11 | snowflake |
Release of Snowflake WebExtension 0.7.2, with a fix for missing client country information that had been introduced in 0.6.0 on 2022-06-27. The result is better country-level attribution of Snowflake users: most who had been being assigned to ?? are now assigned to their proper geolocated country.
archive comment |
| 2023-04-11 | China obfs4 Unknown |
Sudden drop in access to bridges from the "settings" and "moat" pools from China.
comment bridge graph |
| 2023-04-08 | snowflake |
Deployed a performance optimization on the snowflake-01 bridge.
comment |
| 2023-04-07 | snowflake |
Deployed a performance optimization on the snowflake-02 bridge.
comment |
| 2023-03-31 to 2023-04-18 | webstats Unknown |
Tor Browser update pings temporarily drop further.
graph issue |
| 2023-03-22 | snowflake |
Rebooted the snowflake-02 bridge to make nf_conntrack changes persistent.
comment |
| 2023-03-22 | webtunnel |
Release of Tor Browser 12.5a4, first release with WebTunnel for mobile.
blog post issue |
| 2023-03-22 | snowflake |
Rebooted the snowflake-01 bridge to make nf_conntrack changes persistent.
comment |
| 2023-03-19 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-03-15 | snowflake |
Release of Orbot for Android v17 BETA 2. First release of Orbot to include the snowflake-02 bridge along with the existing snowflake-01. Has a change to the Snowflake DTLS fingerprint (removes Hello Verify Request) to mitigate reported blocking in Russia.
release Orbot commit adding snowflake-02 IPtProxy commit upgrading Snowflake |
| 2023-03-13 | snowflake |
Restarted snowflake-01 bridge for a bugfix.
comment issue |
| 2023-03-13 | snowflake |
Restarted snowflake-02 bridge for a bugfix.
comment issue |
| 2023-03-13 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-03-10 to 2023-03-13 | snowflake |
Temporarily restarted snowflake-server on the snowflake-02 bridge to activate the Go race detector.
comment |
| 2023-03-10 | United Arab Emirates obfs4 snowflake |
Removed Connection Assist settings for the United Arab Emirates.
merge request |
| 2023-03-08 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-03-06 | snowflake |
Re-increased firewall connection tracking limits on the snowflake-01 and snowflake-02 bridges, which had been unintentionally reduced to the defaults since 2023-02-16.
comment |
| 2023-03-03 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-02-22 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-02-20 | conjure |
Release of Tor Browser 12.5a3, first release with Conjure.
blog post issue |
| 2023-02-19 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-02-17 | snowflake |
Restarted snowflake-01 bridge for HAProxy security update.
comment |
| 2023-02-16 | snowflake |
Increased the number of tor instances on the snowflake-02 bridge from 4 to 12.
issue |
| 2023-02-16 | snowflake |
Restarted snowflake-02 bridge for HAProxy security update.
comment |
| 2023-02-15 | snowflake |
Release of Tor Browser 12.0.3. Has a change to the Snowflake DTLS fingerprint (removes Hello Verify Request) to mitigate reported blocking in Russia.
blog post comment about Hello Verify Request Snowflake merge request Tor Browser merge request |
| 2023-02-10 to 2023-02-13 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment OONI chart |
| 2023-02-09 to present | Ethiopia |
Social media blocking in Ethiopia.
relay graph bridge graph BBS thread |
| 2023-02-01 to present | Senegal |
Blocking of TikTok in Senegal.
tweet |
| 2023-01-31 to 2023-02-01 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is again blocked in some ISPs in Iran.
comment |
| 2023-01-20 to present | webstats Unknown |
Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue |
| 2023-01-19 | Iran |
Shutdown in some ISPs in Iran during student exams.
Cloudflare Radar |
| 2023-01-16 to 2023-01-24 | Iran moat snowflake |
The domain name cdn.sstatic.net, which is used by Snowflake and Moat, is blocked in some ISPs in Iran.
comment |
| 2023-01-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Thu, 12 Jan 2023 05:25:41 GMT" (geoip-db-digest D48EC82E3F03A0C929B6D85FBA12D538524AC9B1, geoip6-db-digest BB4E522D86A3C1FB6E820A69F4AA16DAC953B05B).
commit |
| 2023-01-12 | snowflake |
Restarted snowflake-server on the snowflake-01 bridge with num-turbotunnel=4.
issue |
| 2023-01-05 | China obfs4 Unknown |
Sudden drop in access to bridges from the "email" pool from China.
comment bridge graph |
2022 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2022-12-21 | webtunnel |
Release of Tor Browser 12.5a1, first release with WebTunnel for desktop.
blog post merge request |
| 2022-12-20 | snowflake |
Increased firewall connection tracking limits on the snowflake-02 bridge.
issue |
| 2022-12-15 | Russia obfs4 snowflake |
Made obfs4 preferred over Snowflake in Connection Assist for Russia.
merge request |
| 2022-12-13 | snowflake |
Increased firewall connection tracking limits on the snowflake-01 bridge.
comment |
| 2022-12-07 | snowflake |
Release of Tor Browser 12.0, the first stable release to contain both the snowflake-01 and snowflake-02 bridges.
issue blog post BBS comment NTC comment |
| 2022-12-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Thu, 10 Nov 2022 06:23:12 GMT" (geoip-db-digest A5C34FC3C709B524ADE33779FFD75C64D1F5003D, geoip6-db-digest 10AAC07E3C77361DF777A0DC1EA956997CB8D439).
commit |
| 2022-12-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Sun, 04 Dec 2022 05:55:29 GMT" (geoip-db-digest 7F3C80C728C56ABA89C3E56279BECFD39314DD97, geoip6-db-digest FD15242DA08323FC66363B431359313374633FDC).
commit |
| 2022-12-01 | snowflake |
Release of Tor Browser 12.0a5, the first release to contain both the snowflake-01 and snowflake-02 bridges.
issue announcement BBS comment |
| 2022-11-18 | Russia meek |
Reported blocking of the meek-azure front domain in Russia.
NTC post |
| 2022-11-15 | United Arab Emirates obfs4 snowflake |
Added obfs4 and Snowflake settings to Connection Assist for the United Arab Emirates.
merge request |
| 2022-11-10 |
Release of tor 0.4.7.11, with mitigations against network denial of service.
announcement |
|
| 2022-11-01 | Iran snowflake |
Orbot begins a gradual release rollout of version 16.6.3-RC-1-tor.0.4.7.10, which has TLS fingerprint changes to make Snowflake work in Iran again.
release |
| 2022-10-27 | snowflake |
Release of Tor Browser 11.5.6. Fixes the problem that prevented Snowflake from working in 11.5.5, and enables uTLS TLS camouflage support by default for Snowflake.
blog post issue |
| 2022-10-26 | snowflake |
Distributed snowflake-01 outgoing traffic over five IP addresses, in an attempt to mitigate anti-DDoS false detections by other relays.
comment |
| 2022-10-26 | snowflake |
Reboot of the snowflake-01 bridge for software updates.
|
| 2022-10-25 | meek snowflake |
Release of Tor Browser 11.5.5. Adds a new working default meek bridge. Intended to enable uTLS TLS camouflage support by default for Snowflake, but had a bug that prevented Snowflake from working.
blog post issue |
| 2022-10-20 | snowflake |
Release of Orbot for Android 16.6.3-BETA-2-tor.0.4.7.10. Adds uTLS TLS camouflage support for Snowflake, making it possible to circumvent recent TLS blocking in Iran.
release announcement |
| 2022-10-19 | snowflake |
Reboot of the snowflake-01 bridge for software updates.
|
| 2022-10-17 | Iran snowflake |
Changed the uTLS fingerprint from hellochrome_auto to hellorandomizedalpn for Snowflake in Iran in Connection Assist, and reverted an inadvertent broker domain front change.
comment |
| 2022-10-17 | Iran snowflake |
Enabled uTLS for Snowflake in Iran in Connection Assist, using the hellochrome_auto fingerprint.
comment merge request |
| 2022-10-17 to 2022-10-25 | snowflake |
Temporary experiment with reverting the 2022-10-03 Snowflake broker change to require multi-bridge support in proxies.
comment for beginning comment for end meeting notes meeting log |
| 2022-10-17 | China Hong Kong obfs4 snowflake |
Changed the recommended transport in Connection Assist to obfs4 in China (was snowflake) and Hong Kong (was unspecified).
issue merge request meeting notes |
| 2022-10-12 | snowflake |
Release of Tor Browser 11.5.4. Adds uTLS TLS camouflage support for Snowflake, making a manual configuration possible to circumvent recent TLS blocking in Iran.
blog post BBS comment |
| 2022-10-05 to 2022-12-05 | meek |
The default meek-azure bridge meek has a configuration issue and the metrics website cannot process statistics.
issue |
| 2022-10-04 | snowflake |
Snowflake rendezvous blocked by TLS fingerprint in Iran.
issue BBS thread |
| 2022-10-04 | meek |
The default meek-azure bridge cymrubridge02 goes offline.
issue |
| 2022-10-03 | snowflake |
Outage of the snowflake-01 bridge caused by a change in firewall rules.
comment |
| 2022-10-03 | snowflake |
Deployment of Snowflake broker to reject proxies that do not support multiple bridges.
issue issue |
| 2022-10-02 | snowflake |
Mitigation of ephemeral port exhaustion on the snowflake-01 bridge.
comment |
| 2022-10-02 | snowflake |
Partial mitigation of ephemeral port exhaustion on the snowflake-01 bridge.
comment |
| 2022-10-02 | snowflake |
Attempted mitigation of ephemeral port exhaustion on the snowflake-01 bridge.
comment |
| 2022-10-02 | snowflake |
Attempted mitigation of ephemeral port exhaustion on the snowflake-01 bridge.
comment |
| 2022-10-02 | snowflake |
Restart of snowflake-server on the snowflake-01 bridge, multiple KCP instances.
comment |
| 2022-10-01 | snowflake |
Restart of snowflake-server on the snowflake-01 bridge, with a reduction in memory use for downstream writes.
comment |
| 2022-10-01 | snowflake |
Restart of snowflake-server on the snowflake-01 bridge, with GOGC=200.
comment |
| 2022-09-30 to 2022-10-01 | snowflake |
Experiment with bypassing extor-static-cookie on the snowflake-01 bridge. Transport- and country-specific metrics were not collected on the bridge during this time.
issue |
| 2022-09-30 | snowflake |
Restart of snowflake-server on the snowflake-01 bridge with a mitigation for ephemeral port exhaustion.
comment |
| 2022-09-30 | snowflake |
Restart of snowflake-server on the snowflake-01 bridge to restore a dual-stack configuration.
comment |
| 2022-09-30 | snowflake |
Temporary outage of the snowflake-01 bridge caused by adjusting network interfaces.
comment |
| 2022-09-29 | snowflake |
Reboot of snowflake-01 bridge and restarts of the snowflake-server process for maintenance.
comment |
| 2022-09-29 to 2022-10-31 |
When Tor Metrics introduced a new method of counting clients (to work with multi-instance relays like the Snowflake bridge), it required reprocessing stats in the overlapping months.
issue |
|
| 2022-09-29 | snowflake |
Redeployed snowflake-server on the snowflake-01 bridge, in an attempt to reduce memory allocation.
comment commit |
| 2022-09-28 | snowflake |
Testing an alternative WebSocket package on the snowflake-01 bridge.
comment |
| 2022-09-27 |
Tor Metrics gains the ability to process descriptors from multi-instance relays (like the Snowflake bridge).
merge request issue |
|
| 2022-09-27 | snowflake |
Redeployed snowflake-server on the snowflake-01 bridge, reducing the per-client packet send queue size from 2048 to 512.
comment |
| 2022-09-26 | snowflake |
RAM upgrade on snowflake-01 bridge.
issue |
| 2022-09-26 | ir obfs4 snowflake |
Made Snowflake the preferred transport in Connection Assist for Iran (was obfs4).
merge request |
| 2022-09-24 | snowflake |
Increased the number of tor instances on the snowflake-01 bridge from 8 to 12.
comment mailing list post |
| 2022-09-24 | snowflake |
Redeployed snowflake-server on the snowflake-01 bridge, with further memory use optimizations.
comment |
| 2022-09-23 | snowflake |
Redeployed snowflake-server on the snowflake-01 bridge, reducing the keepalive timeout from 10 minutes to 4 minutes.
comment |
| 2022-09-23 | snowflake |
Redeployed snowflake-server on the snowflake-01 bridge, disabling profiling and raising the keepalive timeout from 2 minutes to 10 minutes.
comment |
| 2022-09-23 | snowflake |
Deployed memory use optimizations and enabled profiling on the snowflake-01 bridge. Reduced the keepalive timeout from 10 minutes to 2 minutes. Increased the size of the clientID-to-IP map from 10240 to 98304.
comment |
| 2022-09-22 | snowflake |
Increased the number of tor instances on the snowflake-01 bridge from 4 to 8.
mailing list post comment |
| 2022-09-21 to 2022-10-04 | Unknown Country |
Abnormal increase in estimated meek users, believed to be caused by an overloaded meek-azure bridge.
forum thread |
| 2022-09-21 to present | Iran |
Protests and daily Internet shutdowns in Iran.
OONI report BBS thread |
| 2022-08-25 | Turkmenistan snowflake |
Used an alternate STUN port number in Connection Assist for Snowflake in Turkmenistan, and represented STUN servers as IP addresses rather than hostnames.
merge request |
| 2022-08-12 |
Release of tor 0.4.5.14, 0.4.6.12 and 0.4.7.10, with a fix to the geoip database.
announcement |
|
| 2022-08-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Tue, 09 Aug 2022 06:11:25 GMT" (geoip-db-digest 0AE7077313A53103C2B32100D74AAFC04216289D, geoip6-db-digest DCBF1789BF1EEB03276B830CB2AB92BCF779D97F).
commit |
| 2022-08-11 |
Release of tor 0.4.5.13, 0.4.6.11 and 0.4.7.9, with congestion control changes aimed at mitigating the DDoS attack that started 2022-06-06.
announcement |
|
| 2022-08-11 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Thu, 11 Aug 2022 05:41:58 GMT" (geoip-db-digest A642DB3FC558C9C609159064A32CD4FBCA254CCA, geoip6-db-digest C8CB9E5727CCE1479D595EBFEF5D9AAC1C9B9E94).
commit |
| 2022-08-10 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Fri, 17 Jun 2022 06:11:30 GMT" (geoip-db-digest C8CC32FB272CDC7D2C310839D3BE02C49053918D, geoip6-db-digest 0CC43D240A9A4B2B218A8A6DA20EA03EE0BB6912).
commit |
| 2022-08-05 | China obfs4 Unknown |
Sudden drop in access to bridges from the "https" pool from China.
comment bridge graph |
| 2022-07-30 | Indonesia |
Mass blocking of websites in Indonesia.
article |
| 2022-07-29 | Russia |
The domain www.torproject.org and its IP addresses are again blocked, after having been unblocked on 2022-07-14. Other subdomains of torproject.org remain unblocked.
record GitLab comment BBS comment zapret-info diff OONI measurements |
| 2022-07-14 | Bridges |
Release of Tor Browser 11.5, with a new Connection Assist feature for automatic censorship circumvention configuration.
blog post graph of effect on Snowflake initial country-specific settings initial default settings |
| 2022-07-14 | Russia |
The Tor Project web server block, which had begin on 2021-12-07, is lifted.
record GitLab comment BBS comment zapret-info diff OONI measurements |
| 2022-06-27 | snowflake |
Release of Snowflake WebExtension 0.6.0. The main feature added in this release was support for more than one bridge. It had a bug that caused it to stop reporting client IP addresses, which caused a fraction of Snowflake usage to be attributed to the unknown country ?? in metrics, rather than being properly geolocated.
archive merge request issue |
| 2022-06-17 |
Release of tor 0.4.7.8, fixing a DoS vulnerability relating to the new congestion control in 0.4.7.7 (TROVE-2022-001, CVE-2022-33903.
announcement issue |
|
| 2022-06-16 | snowflake |
Began periodic restarts of Snowflake's probetest NAT measurement service, which increased the success rate of proxies self-measuring their NAT type.
issue comment |
| 2022-06-06 to 2023-04-05 |
Network-wide DDoS attack.
status.torproject.org issue forum thread graph onion v3 traffic |
|
| 2022-05-23 |
Release of Tor Browser 11.0.13, the first stable release with congestion control.
blog post |
|
| 2022-05-12 | Uzbekistan meek Unknown |
meek users in Uzbekistan drop to zero.
issue bridge users graph |
| 2022-05-06 | snowflake |
Upgraded the network uplink of the Snowflake bridge from 1 Gbps to 10 Gbps.
issue |
| 2022-04-27 |
Release of tor 0.4.7.7, the first release with congestion control.
forum post blog post |
|
| 2022-04-12 | snowflake |
Stopped the tor instances flakey1–flakey8 on the interim Snowflake bridge, leaving only instances flakey1–flakey4 running on the new bridge.
comment |
| 2022-04-11 | snowflake |
Moved Snowflake traffic to a new bridge running instances flakey1–flakey4.
comment |
| 2022-04-11 to 2022-04-12 | Turkmenistan |
The intensity of Internet blocking in Turkmenistan increases. Some sources inside the country claim that "the Internet has been blocked almost completely".
NTC thread Access Now post Cloudflare Radar tweet |
| 2022-04-11 | snowflake |
Started a new Snowflake bridge running tor instances flakey1–flakey4, temporarily running in parallel with the interim bridge with its instances flakey1–flakey8.
comment |
| 2022-03-19 | snowflake |
Stopped the tor instances flakey1–flakey4 on the old Snowflake bridge, leaving only instances flakey1–flakey8 running on the interim bridge.
comment |
| 2022-03-18 | snowflake |
Restarted the interim Snowflake bridge to correct a problem with onion keys.
comment |
| 2022-03-16 | snowflake |
Moved Snowflake traffic to the interim bridge running instances flakey1–flakey8.
comment |
| 2022-03-15 | snowflake |
Started an interim Snowflake bridge running tor instances nicknamed flakey1–flakey8, temporarily running in parallel with the main bridge with its instances flakey1–flakey4.
comment |
| 2022-02-28 | Bridges |
BridgeDB moves to an rdsys backend.
announcement issue |
| 2022-02-24 to present | Russia Ukraine |
Russian invasion of Ukraine. In the following days, various social media are partially blocked in Russia. Bridge users increase in Russia; relay and bridge users increase in Ukraine.
Wikipedia Relay users in Russia Bridge users in Russia Relay users in Ukraine Bridge users in Ukraine OONI article |
| 2022-02-18 | snowflake |
Outage of the Snowflake bridge.
mailing list post alert failed alert succeeded |
| 2022-02-04 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Fri, 04 Feb 2022 05:51:31 GMT" (geoip-db-digest C4F1B5ECF1B07BBECBE06B93926E4D1E62882782, geoip6-db-digest 0E43B5C62033BFE47F32742D8C9F5B5F83180AA4).
commit |
| 2022-02-01 |
Tor 0.3.5 reaches end of life.
mailing list post |
|
| 2022-01-31 | snowflake |
Switched the snowflake bridge from a load-balanced staging server back to the now load-balanced production server. Debugged connection problems until 2022-01-31 19:52:04.
issue comment comment |
| 2022-01-30 | snowflake |
Rebuilt the production bridge, which had run a single flakey instance, to run four instances flakey1–flakey4.
comment |
| 2022-01-28 | snowflake |
Switched the snowflake-server (at the time running on a load-balanced staging server) for a version with CPU profiling.
comment |
| 2022-01-25 | snowflake |
Switched the snowflake bridge to the temporary load-balanced staging server. Debugged connection problems until 2022-01-25 18:47:00.
issue comment post comment |
| 2022-01-24 | snowflake |
Started a temporary load-balanced Snowflake staging server running four instances flakey1–flakey4. Ran in parallel with the existing production instances (single flakey until 2022-01-30 04:51:00, flakey1–flakey4 thereafter) and the flakey1–flakey4 instances of the practice staging bridge until 2022-02-03 05:39:24.
comment |
| 2022-01-24 to 2022-02-10 | Uzbekistan Relays Unknown |
Temporary decrease in relay users in Uzbekistan.
relay users graph |
| 2022-01-17 to 2022-02-03 | snowflake |
Ran a practice Snowflake staging bridge with four instances flakey1–flakey4, initially in parallel with the production bridge running a single flakey instance.
comment mailing list post |
| 2022-01-12 to 2022-08-08 | webstats Unknown |
Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue issue |
| 2022-01-11 to 2022-02-01 | Burkina Faso obfs4 Unknown |
Temporary spike in obfs4 users from Burkina Faso.
bridge users graph |
| 2022-01-10 | Kazakhstan obfs4 |
The Tor Project begins to distribute obfs4 bridges that listen on ports that are reachable in Kazakhstan, despite the ongoing Internet shutdown.
forum post |
| 2022-01-07 | snowflake |
Increased capacity of the mapping to client IP addresses on the snowflake bridge.
issue deployment comment |
| 2022-01-05 to 2022-01-11 | Kazakhstan |
Country-wide Internet shutdown in Kazakhstan. Was preceded by a shutdown of most mobile networks starting 2022-01-04 14:30. Access was restored for a few hours each day.
Cloudflare blog post RIPE Labs blog post NTC thread BBS thread IODA |
| 2022-01-04 | Gambia |
Internet outage in Gambia.
blog post |
2021 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2021-12-29 | snowflake |
Outage of the snowflake bridge.
comment alert failed alert succeeded |
| 2021-12-24 | Russia obfs4 |
Another round of obfs4 enumeration and blocking occurs in Russia.
comment |
| 2021-12-22 to present | Finland Relays Unknown |
Increase of relay users in Finland.
tor-talk thread possible explanation graph |
| 2021-12-22 | snowflake |
Rebooted the Snowflake bridge to increase the number of CPUs from 4 to 8.
issue |
| 2021-12-20 | snowflake |
Release of Tor Browser 11.0.3, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.
blog post issue NTC post |
| 2021-12-15 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Wed, 15 Dec 2021 06:07:42 GMT" (geoip-db-digest BE1D08BC7B80B1D94CC1B67E5F59CECE9D282F99, geoip6-db-digest E7C6C7875CF972346E01F8E87E87E77D939437DB).
commit |
| 2021-12-14 | snowflake |
Release of Tor Browser 11.5a1, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.
blog post issue NTC post |
| 2021-12-13 | Russia |
The fraction of networks in Russia blocking Tor, measured by OONI, increases from about 20% to about 50%.
relay graph |
| 2021-12-08 | obfs4 |
Release of Tor Browser 11.0.2, containing a new default obfs4 bridge "deusexmachina".
blog post issue |
| 2021-12-08 | Russia |
The Tor Project web server block is expanded from *.www.torproject.org to *.torproject.org.
record GitLab comment NTC comment zapret-info diff |
| 2021-12-07 | Russia |
The www.torproject.org web server is added to the registry of blocked domain names in Russia, by IP addresses and by hostname *.www.torproject.org.
record GitLab comment NTC comment zapret-info diff OONI report |
| 2021-12-01 to 2021-12-13 | Russia meek |
Blocking of the IP address of the meek-azure front domain in certain ISPs in Russia, part of a wider phenomenon of blocking Tor beginning 2021-12-01.
post about start (2021-12-03) post about end (2021-12-13) post about end (2021-12-15) post about end (2021-12-26) |
| 2021-12-01 to present | Russia |
Blocking of Tor directory authorities, relays, default obfs4 bridges, meek-azure, and Snowflake in some ISPs in Russia. There was a temporary cease of blocking for less than a day starting on 2021-12-08.
NTC thread BBS thread issue blog post OONI report |
| 2021-11-22 to 2022-11-28 | Burkina Faso |
Shutdown of mobile Internet in Burkina Faso.
article relay users graph tweet |
| 2021-11-17 to 2022-02-02 | obfs4 |
Run a Tor Bridge campaign, offers rewards for running obfs4 bridges.
blog post about start blog post about end |
| 2021-11-08 |
Removal of roughly 600 "KAX17" non-exit relays.
mailing list post relay graph article |
|
| 2021-11-08 | onion |
Release of Tor Browser 11.0. Final deprecation of v2 onion services.
blog post deprecation timeline graph |
| 2021-11-07 | Nicaragua |
General elections in Nicaragua. Temporary increase in relay users.
article Wikipedia relay users graph |
| 2021-10-29 | Turkmenistan Relays Unknown |
Further decrease of relay users in Turkmenistan.
comment discussion |
| 2021-10-25 to 2021-11-18 | Sudan |
Internet shutdown in Sudan.
article article Cloudflare Radar blog post relay users graph |
| 2021-10-24 | Turkmenistan snowflake Unknown |
Snowflake users in Turkmenistan drop to zero, possibly as a result of blocking of the broker's domain-fronting channel.
issue comment discussion |
| 2021-10-24 | Uzbekistan |
National elections in Uzbekistan.
article relay users graph |
| 2021-10-08 to 2021-11-14 | Netherlands Relays Unknown |
Temporary quintupling of direct users from the Netherlands.
relay graph |
| 2021-10-03 to present | Egypt Relays Unknown |
Increase of relay users in Egypt.
Twitter thread relay graph |
| 2021-10-01 to 2021-10-07 | Belarus Relays |
Increase of users in Belarus, relay only. According to OONI data, the Tor Project website was unblocked and Tor direct connections were accessible for a few days and, then, it was blocked again.
graph OONI Tor test |
| 2021-09-22 to 2021-10-07 |
Experiment to investigate the accuracy of relays' advertised bandwidth.
status.torproject.org mailing list post advertised bandwidth graph |
|
| 2021-08-31 to 2021-09-12 | Brazil Relays |
Increase of users in Brazil, relay only, due protests.
graph article |
| 2021-08-27 to 2021-09-08 |
Experiment to investigate the accuracy of relays' advertised bandwidth.
status.torproject.org mailing list post advertised bandwidth graph |
|
| 2021-08-12 to 2021-08-14 | Zambia |
Block of social media websites and WhatsApp during the national elections. Increase in the number of users.
article ticket OONI report relay graph bridge graph |
| 2021-08-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Thu, 12 Aug 2021 05:51:15 GMT" (geoip-db-digest B3A9770171D3060502B7F13C0618BE109B92DF6C, geoip6-db-digest 410B70763FC675B3622264FAA0FC67B78FDE30C2).
commit |
| 2021-08-08 | Ukraine Relays Unknown |
Large increase of relay users in Ukraine. Bridge users unaffected.
comment anti-censorship team discussion relay graph bridge graph |
| 2021-07-22 to 2021-07-31 | Turkmenistan Relays Unknown |
Decrease in relay users by 75% in Turkmenistan, following a period of elevated usage that began in early 2021.
ticket anti-censorship team discussion NTC thread |
| 2021-07-06 | snowflake |
Release of Tor Browser 10.5, first stable release that includes Snowflake.
blog post |
| 2021-06-20 to 2021-06-24 | Algeria |
Social media blocking during national high school exams.
SMEX |
| 2021-06-15 | snowflake |
Snowflake bridge down for scheduled upgrade.
comment |
| 2021-06-12 to 2021-06-13 | snowflake |
Outage of Snowflake bridge.
issue |
| 2021-06-10 to present |
Experiment to test latencies between relays.
status.torproject.org post announcing start |
|
| 2021-06-10 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Thu, 10 Jun 2021 05:17:29 GMT" (geoip-db-digest 900E9BD6C8B8679A1539F7F316974E86618038B2, geoip6-db-digest 456BCA0796A27F8C80674EE89B1323F8310BED39).
commit |
| 2021-06-04 to present | Nigeria |
Block of Twitter in Nigeria. Increase in the number of bridge users.
article relay graph bridge graph |
| 2021-05-17 to 2021-06-05 |
Experiment to test the accuracy of relays' advertised bandwidth estimation.
status.torproject.org post announcing start post announcing end advertised bandwidth graph relay flags graph |
|
| 2021-05-14 to 2021-05-18 | meek Unknown |
The number of meek users temporarily drops to < 10.
graph |
| 2021-05-12 to 2021-06-21 | snowflake |
Error in stats collection at the Snowflake bridge; user count is erroneously zero.
merge request comment on start comment on end user count graph |
| 2021-05-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Fri, 07 May 2021 05:18:14 GMT" (geoip-db-digest AE864EA783E3776E4950859B5B35F412977F876F, geoip6-db-digest 7008D77E958D919E432AAE7F5C2002B14604FFFE).
commit |
| 2021-05-05 | Turkmenistan meek Unknown |
Drop in meek users in Turkmenistan, from over 200 to almost zero.
bridge user and transport graph |
| 2021-05-03 | snowflake |
Outage of snowflake bridge.
comment |
| 2021-04-14 | snowflake |
Release of Tor Browser 10.5a14. Changes the Snowflake's domain fronting rendezvous to use Fastly rather than Azure.
blog post issue |
| 2021-04-13 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Tue, 13 Apr 2021 05:11:07 GMT" (geoip-db-digest D63E30D25E7767178177C53A0248083011B4202A, geoip6-db-digest 891E8F6FBC7973144E335F0D815B5AF6B6DDF74B).
commit |
| 2021-04-09 | Turkmenistan obfs4 |
Turkmenistan blocks the default obfs4 bridge hopperlab, the last remaining obfs4 bridge at the time.
comment |
| 2021-04-01 to present | Myanmar |
Shutdowns of wireless broadband in Myanmar.
Access Now post |
| 2021-03-16 | ipv4 ipv6 |
Release of tor 0.3.5.14, 0.4.4.8, and 0.4.5.7. Changes the source of geolocation databases from Maxmind to IPFire.
blog post announcement ticket commit |
| 2021-03-14 | Turkmenistan obfs4 |
Turkmenistan blocks the default obfs4 bridges PraxedisGuerrero and smallerRichard.
comment |
| 2021-03-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "IPFire Project Fri, 12 Mar 2021 05:05:24 GMT" (geoip-db-digest 7EFC262380D93924340A0000DF78EC4DD3BFC0E5, geoip6-db-digest B53EF6F829B6A1B1DD242835B6A23580178FBE13).
commit |
| 2021-03-11 | Belarus Relays Unknown |
Drop of relay users in Belarus. Bridge users are not affected.
relay graph bridge graph |
| 2021-03-10 |
Fire in the OVHcloud data centers located in Strasbourg takes about 48 relays offline in AS16276.
OVHcloud advisory Twitter thread |
|
| 2021-03-09 | flashproxy |
Decommissioned flash proxy badge server, flashproxy.bamsoftware.com.
|
| 2021-03-08 | flashproxy |
Decommissioned flash proxy facilitator: server, flashproxy-reg-email poller, and flashproxy-reg-appspot app.
|
| 2021-03-08 | snowflake |
Outage of the Snowflake bridge.
ticket |
| 2021-03-04 to 2021-03-10 | webstats Unknown |
Tor Browser update pings temporarily drop further, for Windows only.
graph issue |
| 2021-02-23 | snowflake |
Release of Orbot 16.4.1-BETA-2-tor.0.4.4.6, with experimental Snowflake proxy support.
release |
| 2021-02-15 to 2021-04-27 | Myanmar |
Nightly shutdowns of fixed-line Internet in Myanmar.
relay graph bridge graph OONI report IODA for start IODA for end Access Now post censorship-analysis issue |
| 2021-02-13 | Belarus Bridges meek obfs4 |
Blocking of default obfs4 bridges and email-distributed bridges in Belarus. Relay users are not affected.
ticket BBS thread NTC thread relay graph bridge graph |
| 2021-02-06 to 2021-02-07 | Myanmar |
Internet shutdown in Myanmar.
relay graph bridge graph OONI report IODA |
| 2021-01-31 to 2021-02-01 | Myanmar |
Partial Internet shutdown after coup in Myanmar.
relay graph bridge graph article IODA OONI report |
| 2021-01-27 | snowflake |
Deployed version 0.5.3 of the Snowflake WebExtension, with improvements to NAT handling.
archive ticket comment |
| 2021-01-26 | Bridges |
Release of Tor Browser 10.5a8, which fixes the bug preventing the use of default bridges.
blog post issue |
| 2021-01-20 | Bridges |
Release of Tor Browser 10.5a7, which has a bug preventing the use of default bridges.
blog post issue issue |
| 2021-01-17 to 2021-01-21 | snowflake Unknown |
Decrease in measured Snowflake users. May have been caused by a drop of NAT-unrestricted proxies.
mailing list thread comment |
| 2021-01-16 to 2021-07-03 | webstats Unknown |
Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue |
| 2021-01-13 to 2021-01-17 | Uganda |
Internet shutdown in Uganda during general election.
OONI report |
| 2021-01-12 | snowflake |
Release of Orbot 16.4.0-RC-1-tor-0.4.4.6, first release with Snowflake client support.
release |
| 2021-01-10 to 2021-02-03 | onion |
Large amounts of traffic at directory authorities disrupts consensus, which causes v3 onion services to stop working because of a bug. Tor 0.3.5.13, 0.4.3.8, and 0.4.4.7 have a fix for the bug.
ticket blog post onion service traffic graph Tor blog post Tor Browser blog post status.torproject.org |
| 2021-01-07 | snowflake |
Changed the DNS records for snowflake.freehaven.net and snowflake-broker.bamsoftware.com to be CNAME records for the corresponding torproject.net domains, rather than bamsoftware.com, in order to avoid malware warnings.
ticket |
| 2021-01-01 to present | China snowflake Unknown |
Increased failure to bootstrap using Snowflake from China.
comment |
2020 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2020-12-17 to 2020-12-20 | snowflake |
DDoS attack on Greenhost, where the Snowflake broker and bridge and onionperf instances are hosted.
2020-12-17 status 2020-12-20 status anti-censorship-team thread |
| 2020-12-05 to 2020-12-09 | meek moat |
An update to an Azure CDN edge server TLS certificate causes an outage of meek and Moat. It is fixed by the release of Tor Browser 10.0.6, which updates the built-in public key pinning of obfs4proxy.
ticket blog post meek graph BridgeDB graph certificate transparency |
| 2020-11-17 | snowflake |
Release of Snowflake WebExtension 0.5.2, with a fix to the NAT type self-test.
archive merge request comment |
| 2020-11-08 to 2020-11-09 | snowflake |
Outage of the snowflake bridge
ticket |
| 2020-10-29 | snowflake |
Release of Snowflake WebExtension 0.5.0, with a NAT type self-test.
archive issue |
| 2020-10-27 to present | Tanzania, United Republic of OR obfs4 |
Blocking of Tor and default obfs4 bridges during elections in Tanzania.
OONI report |
| 2020-10-13 | Belarus Unknown |
Sudden decrease of relay users in Belarus, from 4000 to 1000, with simultaneous increase of bridge users.
BBS thread NTC thread relay graph bridge graph |
| 2020-10-05 | snowflake |
Deployed version 0.4.2 of the Snowflake WebExtension, with better counting of clients.
archive comment |
| 2020-09-27 to 2020-11-10 | Azerbaijan |
Blocking of social media and instant messaging in Azerbaijan during the 2020 Nagorno-Karabakh war
OONI/AIW report IPHR/AIW report relay graph bridge graph |
| 2020-08-31 | obfs4 |
Shutdown of default obfs4 bridge frosty.
ticket |
| 2020-08-24 | snowflake |
The Snowflake broker begins reporting counts of proxy NAT types.
issue |
| 2020-08-19 | snowflake |
Release of Tor Browser 10.0a5, which added the ability to do NAT behavior discovery to the Snowflake client.
blog post issue |
| 2020-08-13 | snowflake |
Deployed version 0.4.1 of the Snowflake WebExtension, with NAT type detection in the browser.
archive comment |
| 2020-08-09 to 2020-08-12 | Belarus |
Internet shutdowns in Belarus, during protests following a presidential election.
report thread |
| 2020-07-06 | snowflake |
Deployed NAT-aware matching at the Snowflake broker.
comment |
| 2020-06-30 to 2020-07-23 | Ethiopia |
Internet shutdown in Ethiopia. Restrictions were partially lifted 2020-07-15.
article article IODA relay users graph |
| 2020-06-25 | snowflake Unknown |
One- or two-day spike in estimated Snowflake users. It resembles the spike that occurred around the time of the Turbo Tunnel release of Tor Browser 9.5a13 on 2020-05-22.
users graph |
| 2020-06-02 | snowflake |
Release of Tor Browser 10.0a1, the first release with Snowflake for Android.
blog post ticket |
| 2020-05-22 | snowflake |
Release of Tor Browser 9.5a13, the first release with Turbo Tunnel session persistence features for Snowflake. There is a spike in estimated users on 2020-05-21 and 2020-05-22, which appears to be an artifact.
blog post ticket users graph |
| 2020-04-23 | snowflake |
Redeployed the Snowflake bridge with support for non–Turbo Tunnel clients and KCP–Turbo Tunnel clients, removing support for QUIC–Turbo Tunnel clients.
comment |
| 2020-03-02 to 2020-03-03 | Iran |
Farsi-language edition of Wikipedia blocked in Iran.
OONI report Censored Planet |
| 2020-02-22 | snowflake |
Made the Snowflake bridge stop reporting client IP addresses of 0.0.0.0. This also affects log messages that report how many client connections had an attached IP address.
comment |
| 2020-02-19 | snowflake |
Deployed a Turbo Tunnel–capable Snowflake bridge.
comment |
| 2020-02-18 | snowflake |
Outage of the Snowflake bridge caused by memory exhaustion.
ticket |
| 2020-01-09 to 2020-06-08 | webstats Unknown |
Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue metrics-team thread |
2019 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2019-12-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "December 3 2019 Maxmind GeoLite2 Country" (geoip-db-digest 4974C4F1F6842975999D0774F2636F383312EA2D, geoip6-db-digest 2046D67D7BBE67AFF12E1CEDD9F9083AB5E3DFAC).
commit |
| 2019-12-03 | snowflake |
Release of version 0.2.0 of the Snowflake extension for Firefox and Chrome. Now reports the proxy type to the broker.
comment |
| 2019-11-16 to 2019-11-23 | Iran |
Internet blackout in Iran.
report NTC thread |
| 2019-11-14 | ipv6 snowflake |
Changed DNS to point to the IPv6-enabled Snowflake broker.
comment |
| 2019-11-14 | snowflake |
Deployed webext-0.1.0 of the Snowflake proxy (which uses a new proxy–broker protocol) to snowflake.torproject.org.
comment |
| 2019-11-13 | snowflake |
Released version 0.1.0 of the Snowflake extension for Firefox and Chrome, using a new proxy–broker protocol.
comment |
| 2019-11-13 | snowflake |
Restarted the broker with a new proxy–broker protocol.
comment |
| 2019-11-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "November 6 2019 Maxmind GeoLite2 Country" (geoip-db-digest 967E4D14ADF0C9439C31FB7B666537A0551C1E6A, geoip6-db-digest BD6E89A28801FA447693EDEC6D47ECCA03B8CD20).
commit |
| 2019-10-28 | snowflake |
Version 0.0.13 of the Snowflake extension is released, decreasing the poll frequency to once every 300 s. The standalone proxy-go instances still poll once every 5 s.
comment |
| 2019-10-22 | fte |
Release of Tor Browser 9.0, removes support for FTE.
blog post ticket |
| 2019-10-17 | snowflake |
Pointed snowflake-broker.torproject.net (one of three domain names for the Snowflake broker) to a new broker instance set up with IPv6. Metrics unintentionally start being collected from the new instance, instead of the old instance that was still in use.
ticket ticket |
| 2019-10-03 | China obfs4 |
The new default bridge 193.11.166.194 is already blocked by the GFW – two days after the Tor Browser alpha release that shipped with it. The block may have happened sooner, though. We only tested the bridge just now.
ticket |
| 2019-10-02 | ipv4 ipv6 |
geoip and geoip6 databases updated to "October 1 2019 Maxmind GeoLite2 Country" (geoip-db-digest 34ABC09019FAB09BA3083B3663EC0B807FC16151, geoip6-db-digest F4D3BEC6294DF7FAEAEE5966CC6706CF91CE9BC4).
commit |
| 2019-10-01 | snowflake |
Release of Tor Browser 9.0a7, the first release that has Snowflake for Windows.
blog post ticket |
| 2019-09-20 to 2019-09-22 | Egypt |
Blocking of news sites and commuications apps in Egypt during protests.
OONI report Censored Planet Wikipedia Amnesty International |
| 2019-08-06 to 2019-08-09 |
Experiment to test the accuracy of relays' advertised bandwidth estimation.
description of experiment post announcing start post announcing end advertised bandwidth graph relay flags graph |
|
| 2019-07-27 | snowflake |
The Snowflake proxy hosted at snowflake.torproject.org is updated, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment |
| 2019-07-27 | snowflake |
Deployed version 0.0.7 of the Snowflake WebExtension for Chrome, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment |
| 2019-07-26 | flashproxy snowflake |
Cupcake 2.0 is released, now working with Snowflake rather than flash proxy.
Chrome Web Store page |
| 2019-07-26 | snowflake |
Deployed version 0.0.8 of the Snowflake WebExtension for Firefox, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment |
| 2019-07-23 | snowflake |
The broker domain name snowflake-broker.bamsoftware.com is blocked by Google Safe Browsing, preventing the Snowflake web browser extension from working.
ticket comment noting decrease in proxies |
| 2019-07-18 to 2019-08-07 | Kazakhstan |
The Kazakh ISP KazTelecom does man-in-the-middle of TLS connections.
Censored Planet report post about end |
| 2019-07-09 | obfs3 |
Release of Tor Browser 8.5.4 and 9.0a4. Removes the last remaining default obfs3 bridges.
8.5.4 blog post 9.0a4 blog post issue #31055 issue #31058 |
| 2019-07-03 | snowflake |
Deployed version 0.0.1 of the Snowflake WebExtension for Chrome.
comment |
| 2019-07-02 to 2019-08-26 | Iran OR Bridges Relays |
Relays in Iran are reported to be unblocked once again, and user numbers recover to about 25% of the maximum they had reached during the previous period of unblocking. They then drop precipitously, and OR bridge users increase.
ticket comment comment |
| 2019-06-26 | snowflake |
Deployed version 0.0.1 of the Snowflake WebExtension for Firefox.
comment |
| 2019-06-21 to present | Myanmar |
Internet shutdown in parts of Myanmar.
report 2020 report |
| 2019-06-20 | obfs4 |
A call to set up new obfs4 bridges is posted to the tor-relays mailing list.
mailing list thread thread continues |
| 2019-06-11 | ipv4 ipv6 |
geoip and geoip6 databases updated to "June 10 2019 Maxmind GeoLite2 Country" (geoip-db-digest A131E1F283F4AD307248B03A70B0413E81ADF2A4, geoip6-db-digest 0EFF3EE1E22927EC9A77BFFAFD703F3A5B32FA79).
commit |
| 2019-05-28 |
Failure of network equipment at site of op-ab OnionPerf instance (equipment now replaced)
onionperf timeouts graph |
|
| 2019-05-22 | fte |
Release of Tor Browser 9.0a1, removes support for FTE.
blog post ticket |
| 2019-05-17 | ipv4 ipv6 |
geoip and geoip6 databases updated to "May 13 2019 Maxmind GeoLite2 Country" (geoip-db-digest 35DFDA2D06D2A0467EF37D60A67B438B11952B74, geoip6-db-digest C0193A1D086819353FABBF70AADB15866B7B2525).
commit |
| 2019-05-16 to 2019-06-23 | Iran Relays |
Tor becomes directly accessible in Iran, leading to an explosion in relay users up to about 1.5 million, before being blocked again.
ticket comment about end tor-talk thread Reddit thread comment Reddit thread |
| 2019-05-01 | China snowflake |
China blocks the default Snowflake proxies.
ticket |
| 2019-04-29 |
Network equipment failure at site of op-ab OnionPerf instance
performance graph |
|
| 2019-04-28 to 2019-04-29 | Benin |
Social media blocking and Internet blackout during parliamentary elections in Benin.
OONI report |
| 2019-04-27 to present | Russia Relays Unknown |
Relay users increase by about 100K, in an apparent weekly cycle. Bridge users are not similarly affected.
relay graph bridge graph tor-talk thread Reddit thread |
| 2019-04-21 to 2019-05-01 | Sri Lanka |
Sri Lanka blocks Facebook, WhatsApp, Instagram, YouTube after bombings.
relay graph bridge graph Access Now post Censored Planet |
| 2019-04-16 | snowflake |
Outage of Snowflake fallback proxy-go instances, caused by a failure to restart after segregating old logs.
ticket |
| 2019-04-03 | ipv4 ipv6 |
geoip and geoip6 databases updated to "April 2 2019 Maxmind GeoLite2 Country" (geoip-db-digest 62A97D4DEBF76A5CE5C232B95BBF05B191EB8AAA, geoip6-db-digest 66620E57A8427C53D6084B3229807DC320CDC3D0).
commit |
| 2019-03-22 | snowflake |
Outage of the Snowflake broker, caused by a full disk.
ticket |
| 2019-03-07 to 2019-03-30 | Venezuela |
Power outages in Venezuela.
Wikipedia relay users graph IODA |
| 2019-03-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "March 4 2019 Maxmind GeoLite2 Country" (geoip-db-digest 5B90C2F06292D8237A5C77E27ED4ABABF4AE0684, geoip6-db-digest E971FCA4A89F6C685928FF9371D1BF7A2484F4CA).
commit |
| 2019-02-16 to present | Belarus Relays Unknown |
Increase of relay users in Belarus.
graph mailing list post |
| 2019-02-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "February 5 2019 Maxmind GeoLite2 Country" (geoip-db-digest DDAA25B4425EAA45EE8E92A6531CD3246C8E989A, geoip6-db-digest 0368FA722D90026E60BD60A26F615791A7A53D21).
commit |
| 2019-02-07 | snowflake |
Disabled the 3 proxy-go instances that were pointing at the former broker hosted on App Engine.
comment |
| 2019-01-30 to 2019-04-07 | webstats Unknown |
Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue metrics-team thread |
| 2019-01-21 | Venezuela |
Blocking of social media in Venezuela.
OONI report Censored Planet |
| 2019-01-14 to 2019-01-21 | Zimbabwe |
Internet shutdown and blocking of Facebook, WhatsApp, and Twitter in Zimbabwe.
article OONI report Censored Planet |
| 2019-01-12 to 2019-01-18 | Venezuela |
Blocking of Wikipedia in Venezuela.
OONI report Censored Planet |
| 2019-01-07 | Bridges |
Release of tor 0.3.5.7, 0.3.4.10, and 0.3.3.11. Fixes the bug, present since 0.3.5.1-alpha/0.3.4.1-alpha, of idle bridges being unuseful.
comment ticket blog post ticket |
| 2019-01-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "January 3 2019 Maxmind GeoLite2 Country" (geoip-db-digest 2B8A70B399CF8B471289A4DB52947DE965D8DE5F, geoip6-db-digest FEA33E6F398DF67252F41DDD3D010E69B33D544E).
commit |
| 2019-01-07 to 2019-01-08 | Gabon |
Internet shutdown in Gabon following a coup attempt.
OONI report NetBlocks report |
2018 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2018-12-20 to present | Sudan |
Protests and social media blocks in Sudan.
relay graph Access Now post Psiphon users |
| 2018-12-18 to 2018-12-21 | United Arab Emirates OR |
Reported blocking of vanilla Tor in the UAE.
comment |
| 2018-12-05 | ipv4 ipv6 |
geoip and geoip6 databases updated to "December 5 2018 Maxmind GeoLite2 Country" (geoip-db-digest 0684E08BDC01ABB41A717E9C55BDEB21531CFAC8, geoip6-db-digest AFFAD1475879D57B1C1EA119141EFA0E57547290).
commit |
| 2018-11-26 to 2018-11-28 |
Outage of the onionperf-us instance, caused by a Greenhost east coast VPS migration.
mailing list post |
|
| 2018-11-26 to 2018-11-28 | flashproxy |
Outage of the flash proxy badge hosting server, flashproxy.bamsoftware.com, caused by a Greenhost east coast VPS migration.
|
| 2018-11-19 to 2018-11-27 |
Slow-running processes on the metrics host cause an observed drop in the overall relay bandwidth graph.
mailing list thread |
|
| 2018-11-16 to 2018-11-22 | snowflake |
A full disk stops the Snowflake bridge and fallback proxies from working.
ticket |
| 2018-11-11 | ipv4 ipv6 |
geoip and geoip6 databases updated to "November 6 2018 Maxmind GeoLite2 Country" (geoip-db-digest 603BE8A0CA1B7164D76DBC75A280C9CA0A556F65, geoip6-db-digest 1CEF662539C0D91EC07A7C5C13134E3317B451E4).
commit |
| 2018-10-25 to 2018-10-28 | Relays |
Gap in observed number of relay users, caused by the estimated fraction of reporting relays exceeding 100%.
metrics-team post ticket graph archived graph |
| 2018-10-10 | ipv4 ipv6 |
geoip and geoip6 databases updated to "October 9 2018 Maxmind GeoLite2 Country" (geoip-db-digest 76907A8345DA84CC724CDD573B6E08F6A089FEEB, geoip6-db-digest 5852AB4D3A96D7526DD47D5573CB4FA32BE4ECEB).
commit |
| 2018-09-26 to present | fte |
Outage of default FTE bridge 128.105.214.162:8080.
comment |
| 2018-09-26 to present | fte |
Outage of default FTE bridge 128.105.214.163:8080.
comment |
| 2018-09-18 | Bridges |
Release of tor 0.3.5.1-alpha, containing a bug that makes idle bridges unuseful.
|
| 2018-09-15 to 2018-09-16 | United Arab Emirates obfs4 |
Reported blocking of obfs4 in the UAE.
ticket comment |
| 2018-09-11 | ipv4 ipv6 |
geoip and geoip6 databases updated to "September 6 2018 Maxmind GeoLite2 Country" (geoip-db-digest C9118A0D763E069B890674A4D5000A3DB846746B, geoip6-db-digest 8A46B41B2AE16F3705C67DEECD20EAA50B043A51).
commit |
| 2018-09-10 | Bridges |
Release of tor 0.3.4.8, 0.2.9.17, 0.3.2.12, and 0.3.3.10. 0.3.4.8, containing a bug that makes idle bridges unuseful, becomes the stable release.
blog post |
| 2018-08-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "August 7 2018 Maxmind GeoLite2 Country" (geoip-db-digest 4C2E4FF8220FFFB4989564728701016DF705BCBF, geoip6-db-digest F3F5C576BF3E8D5FD9F6F33603D7BFD64DEAA8B5).
commit |
| 2018-08-04 to 2018-08-05 |
Collector was missing consensuses. They were recovered via recent relay consensus diffs.
metrics-team thread tor-relays thread |
|
| 2018-07-29 to 2018-08-08 | Bangladesh |
Protests over road safety in Dhaka, Bangladesh. Reports of mobile network throttling and blocking of Facebook.
New York Times article Daily Star article on throttling NetBlocks report |
| 2018-07-28 to present | Turkey Relays Unknown |
Another jump of relay users in Turkey, from 5k to about 30k.
relay graph bridge graph |
| 2018-07-21 | Bridges |
The estimated number of bridge users becomes available again, following the introduction of the new bridge authority Serge on 2018-07-13. The stats took about a week to reappear because of the discontinuity in bridge reporting affecting the estimated fraction of reporting bridges.
mailing list post graph |
| 2018-07-20 to 2019-05-02 | onion Unknown |
The number of v2 onion services increases from 70k to 100k.
comment |
| 2018-07-15 | snowflake |
Made the Snowflake bridge report to the new Serge bridge authority.
comment |
| 2018-07-14 | Bridges |
Release of Tor 0.2.9.16, 0.3.2.11, 0.3.3.9, and 0.3.4.5-rc. Switches bridge authority from Bifroest to Serge. The number of bridges begins counting up from zero as bridges are upgraded. The estimated number of bridge users remained unavailable until 2018-07-21 because of the discontinuity.
announcement ticket blog post number of bridges graph |
| 2018-07-14 to 2018-07-25 | Iraq |
Protests, Internet shutdowns, and social media blocks in Iraq.
relay graph NetBlocks post NRT article about end Psiphon users |
| 2018-07-13 | Bridges |
The replacement bridge authority Serge begins publishing bridge descriptors.
ticket ticket number of bridges graph |
| 2018-07-06 | Bridges |
The bridge authority Bifroest stops publishing bridge descriptors. Bridge stats are unavailable until 2018-07-13 and the introduction of a new bridge authority.
ticket ticket mailing list post number of bridges graph |
| 2018-07-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "July 3 2018 Maxmind GeoLite2 Country" (geoip-db-digest CFFD7B0544879150A31F966E83DBB7DDDFA16F49, geoip6-db-digest B25710F60CB23F0C76F58AFB0A26A26ACB701BB2).
commit |
| 2018-07-04 to 2018-07-06 | snowflake |
Outage of the Snowflake bridge, caused by a full disk.
ticket |
| 2018-07-01 to present | Uganda |
A social media tax takes effect in Uganda. The government pressures ISPs to block VPNs.
relay graph bridge graph BBC article AllAfrica article OONI report |
| 2018-06-27 | meek |
Release of Tor Browser 8.0a9 with non-working meek.
blog post ticket |
| 2018-06-24 to 2018-07-06 | snowflake |
Metrics for Snowflake are missing, for unknown reasons. The gap is nearly contemporaneous with the gap the measurements for all transports/bridges caused by Bifroest–Serge bridge authority switchover, but starts about 2 weeks earlier in Snowflake's case.
ticket |
| 2018-06-20 to present | Venezuela |
Venezuela's largest ISP, CANTV, blocks direct access to Tor and the IP addresses of default bridges. meek and non-default bridges are reported to work.
ticket mailing list post Access Now report |
| 2018-06-11 | ipv4 ipv6 |
geoip and geoip6 databases updated to "June 7 2018 Maxmind GeoLite2 Country" (geoip-db-digest 93112125248AD2C11A2531B934FD4AC03999738D, geoip6-db-digest BFD2B453F2D9DC875B7B0C464A185E6C3202534F).
commit |
| 2018-06-10 to 2018-07-11 | Turkey Relays Unknown |
Jump of relay users in Turkey, from 5k to about 30k. The timing of the beginning corresponds to the release of Tor Browser 7.5.5 and 8.0a8.
relay graph bridge graph comment |
| 2018-06-10 | meek |
Release of Tor Browser 8.0a8, removes meek-amazon option.
blog post |
| 2018-06-09 | meek |
Release of Tor Browser 7.5.5, removes meek-amazon option.
blog post |
| 2018-05-23 to 2018-07-01 | Bridges Unknown |
Sharp increase in bridge users in many unrelated countries, affecting even the global aggregate. Relay users unaffected. The graphs reach a peak around 2018-06-07 and then begin falling again. An incomplete sampling of affected countries: Bangladesh Chile Indonesia Morocco Venezuela.
relay graph bridge graph |
| 2018-05-22 to 2018-06-08 | Iraq obfs4 Unknown |
Increase in obfs4 users in Iraq, followed by a slow decrease. No matching change in relay users or other transports.
bridge graph |
| 2018-05-17 | Bridges |
Release of tor 0.3.4.1-alpha. Has a bug that makes idle bridges unuseful.
ticket ticket |
| 2018-05-15 | ipv4 ipv6 |
geoip and geoip6 databases updated to "May 1 2018 Maxmind GeoLite2 Country" (geoip-db-digest 765D2F123DDA7DAEA9C9263975E2B4BAFBD2B908, geoip6-db-digest 2AA568CC898BF9924FBACEA26946AA7ED10E7D87).
commit |
| 2018-05-14 | meek |
Disabled the d2cly7j4zqgua7.cloudfront.net CDN endpoint for meek-amazon.
Tor Browser ticket Orbot ticket |
| 2018-05-09 | snowflake |
Release of Tor Browser 8.0a7, which changes the default Snowflake rendezvous to use an Azure domain front, instead of the Google one that had been non-functional since 2018-04-13.
blog post ticket |
| 2018-05-08 | meek |
The meek-amazon bridge imposes a rate limit of 1 MB/s.
|
| 2018-05-08 | Russia |
Russia unblocks about 3.7 million IP addresses belonging to Google and Digital Ocean.
Roskomnadzor press release monitoring page |
| 2018-04-30 to present | Iran |
Iranian ISPs block Telegram.
ticket article relay graph bridge graph Psiphon users |
| 2018-04-28 | Russia |
Russia unblocks about 3 million IP addresses belonging to Amazon and OVH.
Roskomnadzor press release monitoring page |
| 2018-04-25 to 2018-07-02 | onion Unknown |
The number of v2 onion services increases from 70k to 120k.
ticket |
| 2018-04-16 to 2018-05-08 | Russia |
Russia tries to block Telegram; blocks about 18 million IP addresses including some belonging to Amazon and Google cloud services.
article relay graph bridge graph |
| 2018-04-16 | snowflake |
Moved the Snowflake broker from App Engine to a standalone server.
comment |
| 2018-04-13 | snowflake |
Snowflake client registrations (based on domain fronting) stop working, because of a Google infrastructure change that stops domain fronting from working. The time of the change is between 2018-04-13 14:00:00 and 2018-04-13 18:00:00, based on when the bandwidth graph of the Snowflake bridge 5481936581E23D2D178105D44DB6915AB06BFB7F went to zero.
ticket |
| 2018-04-05 | ipv4 ipv6 |
geoip and geoip6 databases updated to "April 3 2018 Maxmind GeoLite2 Country" (geoip-db-digest 8A53650327E8D30E971DC90F564BA9BD1A513F19, geoip6-db-digest 698852511F6BC27DFFC115805044C71FDCCF70AF).
commit |
| 2018-04-02 to 2018-04-18 | snowflake |
Accidentally misconfigured the 3 proxy-go instances that were meant to point to the new standalone broker so that they pointed to the old App Engine broker.
start end |
| 2018-04-02 | snowflake |
Reinstated periodic restarts of the fallback snowflake proxies.
comment |
| 2018-03-28 to 2019-07-13 | Chad |
Chad blocks social messaging apps.
article about end article about end graph |
| 2018-03-27 | snowflake |
Restarted the fallback snowflake proxies with no limit on memory.
comment |
| 2018-03-26 | snowflake |
Release of Tor Browser 8.0a5. Improves snowflake client performance.
blog post ticket |
| 2018-03-23 | snowflake |
Restarted the fallback snowflake proxies with a limit on resident memory (ulimit -m) rather than virtual memory (ulimit -v).
comment comment |
| 2018-03-22 | snowflake |
Provisionally increased memory limits of the fallback snowflake proxies to 400 MB, 800 MB, or unlimited.
comment |
| 2018-03-22 | snowflake |
Increased memory limit of the fallback snowflake proxies from 200 MB to 400 MB.
comment comment |
| 2018-03-22 | snowflake |
Disabled periodic restarts of the fallback snowflake proxies; gave them a memory limit of 200 MB.
comment |
| 2018-03-16 | snowflake |
Deployed another attempt to fix frequent crashes of the fallback snowflake proxies.
comment |
| 2018-03-14 | snowflake |
Deployed an attempt to fix frequent crashes of the fallback snowflake proxies.
comment commit |
| 2018-03-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "March 8 2018 Maxmind GeoLite2 Country" (geoip-db-digest 0FD75C42A32E82100361BD367CB13862806E6A13, geoip6-db-digest 5AFA101C4A6AD4289CEE4575943D6BA851606245).
commit |
| 2018-03-07 to 2018-03-15 | Sri Lanka |
Sri Lanka blocks Facebook, Instagram, WhatsApp, and Viber.
relay graph bridge graph article |
| 2018-03-05 to 2018-03-08 | Germany OR Relays Unknown |
Steady drop in the number of relay users in Germany, from 1.5M to 650k. (Drop coincides with the release of tor 0.3.2.10, 0.3.1.10, and 0.2.9.15, which offer better resistance against DoS attacks; as well as improvements in speed for downloads from onions graph; see this graph as well. More datapoints: DDoS of the network happened around the time that saw an increase in the number of relay users in Germany, see entry above or graph)
graph ticket |
| 2018-03-03 |
Release of tor 0.3.2.10, 0.3.1.10, and 0.2.9.15, which offer better resistance against DoS attacks.
blog post ticket |
|
| 2018-02-27 to 2018-03-02 |
Less than 3 bandwidth authorities are available.
tor-relays |
|
| 2018-02-24 | China |
Blocking in China intensifies following the announcement of proposed changes to remove presidential term limits.
article |
| 2018-02-12 | Relays |
Tor 0.3.3.2-alpha reaches deb.torproject.org repositories
|
| 2018-02-11 | Relays |
Tor 0.3.3.2-alpha reaches FreeBSD repositories
|
| 2018-02-10 | Relays |
Tor 0.3.3.2-alpha is released (containing important denial-of-service migitations for relays)
blog |
| 2018-02-08 | ipv4 ipv6 |
geoip and geoip6 databases updated to "February 7 2018 Maxmind GeoLite2 Country" (geoip-db-digest FF83AD73DE7672C77EDF8888F4B241642C7C90F7, geoip6-db-digest B1CDBFEB7C88F82EF3B5289CAFEED1321FA4693F).
commit |
| 2018-02-01 to 2018-02-05 | Iran meek Unknown |
Drop of meek users in Iran; other transports not affected.
graph |
| 2018-01-24 to 2018-04-05 | webstats Unknown |
Tor Browser update pings drop temporarily. The beginning of the drop corresponds with the release of Tor Browser 7.5; however unlike with Tor Browser 6.5.2 in 2017, there was no change to app.update.url this time.
graph issue metrics-team thread |
| 2018-01-23 | obfs4 |
Tor Browser 7.5 is released. It adds the default obfs4 bridge noisetor01:46089.
blog post |
| 2018-01-20 | Relays |
Some more directory authorities upgrade to 0.3.2.9 which enforces new requirements for the exit flag. ~50 relays lose the exit flag
tor-relays post |
| 2018-01-18 to 2018-02-24 | snowflake |
Outage of Snowflake broker caused by the disabling of the Let's Encrypt TLS-SNI-01 challenge.
ticket graph |
| 2018-01-16 |
Tor 0.3.2.9 reaches deb.torproject.org.
relay versions graph |
|
| 2018-01-08 | ipv4 ipv6 |
geoip and geoip6 databases updated to "January 5 2018 Maxmind GeoLite2 Country" (geoip-db-digest ACE2AF82816B9D3F58FC9C79A41B4506D6DAD713, geoip6-db-digest 387B3F555F1E054F0F9971C726F49848C5B5CF8B).
commit |
| 2018-01-05 to present |
Outage of the op-hk OnionPerf instance.
op-hk graph |
|
| 2018-01-01 | United Arab Emirates Relays |
User report that the UAE blocked Tor, bridges work.
comment |
2017 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2017-12-28 to 2018-01-13 | Iran |
Protests in Iran, blocking of various services including Tor. Instagram was unblocked 2018-01-06. Telegram was unblocked 2018-01-13.
Wikipedia OONI report relay graph bridge graph tweet Psiphon users |
| 2017-12-21 |
Release of tor 0.3.2.8-rc, intended to fix the KIST bug that enabled a DoS on relays by running them out of memory.
announcement ticket |
|
| 2017-12-20 | ipv4 ipv6 |
geoip and geoip6 databases updated to "December 6 2017 Maxmind GeoLite2 Country" (geoip-db-digest 1D486694A710145631B295CC39ECC5682F75858C, geoip6-db-digest F33231CAC761A71F7C19273DB1E11CEE01E2D982).
commit |
| 2017-12-16 to 2017-12-17 | Bridges Unknown |
Drop in the number of measured bridges.
graph mailing list post |
| 2017-12-12 to 2018-01-18 | meek |
Outage of the meek.bamsoftware.com (unthrottled for public use), meek.bamsoftware.com:7443 (former meek-azure, now unused), and gaeuploader.meek.bamsoftware.com (used by GAEuploader) bridges.
|
| 2017-12-12 to 2018-01-10 | France OR Relays Unknown |
Temporary tripling of relay users in France. Bridges not affected.
graph |
| 2017-12-10 to 2018-02-01 | Germany OR Relays Unknown |
Further, slow increase of relay users in Germany, from 500k to over 1.5M.
graph Reddit thread ticket |
| 2017-12-09 | OR ipv6 Relays |
Release of Tor Browser 7.0.11, containing tor 0.3.1.9, which adds an IPv6 address for the bridge authority bastet.
blog post |
| 2017-12-09 | OR ipv6 Relays |
Release of Tor Browser 7.5a9, containing tor 0.3.2.6-alpha, which adds an IPv6 address for the bridge authority bastet.
blog post |
| 2017-12-08 to 2017-12-11 | Bridges |
The bridge authority was down for unknown reasons.
graph mailing list post |
| 2017-12-05 to 2017-12-15 | Zimbabwe |
Internet outage in Zimbabwe.
article |
| 2017-12-04 to present |
DDoS attack creates load on the network.
tor-relays thread relay graph summary post ticket |
|
| 2017-12-01 | OR ipv6 Relays |
Release of tor 0.2.8.17, 0.2.9.14, 0.3.0.13, 0.3.1.9, and 0.3.2.6-alpha, which add an IPv6 address for the bridge authority bastet.
ticket blog post |
| 2017-11-25 to 2017-11-27 | Pakistan |
Social media block in Pakistan.
article NetBlocks data OONI/Bytes For All report |
| 2017-11-15 | OR Relays |
Release of Tor Browser 7.5a8, containing tor 0.3.2.4-alpha, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.
blog post |
| 2017-11-15 | meek |
Outage of meek-amazon bridge.
ticket |
| 2017-11-14 | OR Relays |
Release of Tor Browser 7.0.10, containing tor 0.3.1.8, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.
blog post |
| 2017-11-11 to 2017-11-12 |
Outage of the op-hk OnionPerf instance.
op-hk graph |
|
| 2017-11-10 | ipv4 ipv6 |
geoip and geoip6 databases updated to "November 6 2017 Maxmind GeoLite2 Country" (geoip-db-digest E3C910F3B2A6C916C7BE33A943091EF57048B72C, geoip6-db-digest E8BD5B2E6554C27F718F1222667C09680D75F799).
commit |
| 2017-11-01 | meek |
Turned off the old meek-amazon CDN endpoint d2zfqthxsdq309.cloudfront.net.
mailing list post |
| 2017-11-01 | Russia |
Ban on VPNs and anonymizers takes effect in Russia.
news article law |
| 2017-10-30 to 2017-11-06 | Zambia OR Relays Unknown |
Short-lived tripling of relay users in Zambia.
graph |
| 2017-10-25 | OR Relays |
Release of tor 0.2.5.15, 0.2.8.16, 0.2.9.13, 0.3.0.12, and 0.3.1.8, which add a new directory authority bastet, and change the IP address of the directory authority Longclaw.
blog post Bastet blog post bastet ticket Longclaw ticket |
| 2017-10-18 to 2017-10-24 | China |
19th National Congress of the Communist Party of China.
wikipedia Psiphon users |
| 2017-10-14 | snowflake |
Activated client IP address statistics on the Snowflake server and standalone proxies.
comment |
| 2017-10-07 to 2017-12-20 | Romania OR Relays Unknown |
Surge of relay users in Romania, from 10k to around 90k, which later subsided.
graph metrics-team thread |
| 2017-10-05 | China |
Guo Wengui speaks at the National Press Club, 09:00–11:00 eastern time. Reports of disruption of VPNs, Tor, Psiphon, Lantern, Shadowsocks in China.
article on conference tweet tweet tweet |
| 2017-10-05 | ipv4 ipv6 |
geoip and geoip6 databases updated to "October 4 2017 Maxmind GeoLite2 Country" (geoip-db-digest 3A59213E5CFEE380F544B72DC1105366C6BD1CDE, geoip6-db-digest 1B8C975E5C62CF0FB5B4E598AE27B7189952BB09).
commit |
| 2017-10-04 | fte |
Permanent hardware failure of default FTE bridge 128.105.214.161:8080.
comment |
| 2017-10-01 to 2018-03-01 | Cameroon |
Internet shutdown in parts of Cameroon.
article article |
| 2017-09-26 to 2017-10-22 | Germany OR Relays Unknown |
Steady increase of relay users in Germany, from 180k to around 500k. It would increase further starting 2017-12-10.
de graph Reddit thread ticket |
| 2017-09-20 | Puerto Rico |
Hurricane Maria hits Puerto Rico.
graph wikipedia |
| 2017-09-15 to 2017-10-12 |
Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved.
mailing list post torperf graph torperf-failures graph op-hk graph |
|
| 2017-09-15 to 2017-09-16 | Bridges |
The bridge authority was down due to an issue with its offline master key.
graph mailing list post |
| 2017-09-14 to 2017-09-16 | Bridges |
Outage of the bridge authority Bifroest.
|
| 2017-09-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "September 6 2017 Maxmind GeoLite2 Country" (geoip-db-digest 0CE9EA8882EDED265451C36B49AE7BBB06A11C16, geoip6-db-digest C4573496EBD1CC335843067107DA49E482568FF6).
commit |
| 2017-09-06 | Puerto Rico |
Hurricane Irma hits Puerto Rico.
graph wikipedia |
| 2017-09-02 to 2017-09-21 | obfs4 Unknown |
About a 35% increase in obfs4 users before returning to normal. Happened in many countries. Other transports do not have it.
graph |
| 2017-09-01 to 2017-09-20 | obfs4 |
A flood of over 4,000 obfs4 bridges nicknamed "Machiavelli".
graph of number of bridges tor-relays post metrics-team thread tweet |
| 2017-08-27 to 2017-08-29 | Egypt Turkey OR Relays Unknown |
Short-lived, simultaneous spike in direct users in Egypt and Turkey. Bridge users not affected.
eg graph tr graph |
| 2017-08-23 | Korea, Republic of OR Relays Unknown |
Increase of users in South Korea, relay only.
graph |
| 2017-08-15 | Hong Kong OR Relays Unknown |
Triple increase in direct Tor users in Hong Kong. Bridge users not affected.
relay graph |
| 2017-08-14 to 2017-08-15 | Bridges |
Outage of the bridge authority Bifroest.
mailing list post mailing list post graph |
| 2017-08-14 | ipv6 obfs4 Unknown |
Jump in IPv6 users of the Lisbeth default obfs4 bridge.
comment |
| 2017-08-10 to 2017-08-11 |
Outage of the op-hk OnionPerf instance. Reported timeouts on the tor network increased, download speed improved.
torperf graph torperf-failures graph op-hk graph |
|
| 2017-08-08 | snowflake |
Tor Browser 7.5a4 released, including Snowflake for macOS.
blog post issue |
| 2017-08-07 to present | Congo, The Democratic Republic of the |
The Democratic Republic of the Congo orders a block of social media services.
article relay graph bridge graph |
| 2017-08-06 to 2017-10-07 | Seychelles OR Relays Unknown |
Further increase of relay users in the Seychelles, from 5k to 100k. Stopped at the same time as increases in the Netherlands, Romania, and Lithuania.
relay graph post suggesting link to 2× dirauth bandwidth post about start post about end |
| 2017-08-03 | ipv4 ipv6 |
geoip and geoip6 databases updated to "August 3 2017 Maxmind GeoLite2 Country" (geoip-db-digest 75AABD32582AC554AF252DDC7BBBABE7C6F28B28, geoip6-db-digest A52EFFEF8CF6F3CAA8EBD34961361544E959FAE1).
commit |
| 2017-08-02 to 2017-10-07 | Lithuania OR Relays Unknown |
Increase of relay users in Lithuania, from 2k to 70k. Stopped at the same time as increases in the Netherlands, Romania, and the Seychelles.
relay graph post suggesting link to 2× dirauth bandwidth post about start post about end |
| 2017-07-31 to 2017-10-07 | Netherlands OR Relays Unknown |
Increase of relay users in the Netherlands, from 50k to 100k. Stopped at the same time as increases in Romania, Lithuania, and the Seychelles.
relay graph post suggesting link to 2× dirauth bandwidth post about start post about end |
| 2017-07-31 to 2017-10-07 | Romania OR Relays Unknown |
Increase of relay users in Romania, from 10k to 40k. Bridge users not affected. Stopped at the same time as increases in the Netherlands, Lithuania, and the Seychelles. Another increase began immediately after.
relay graph post suggesting link to 2× dirauth bandwidth |
| 2017-07-31 to 2017-08-28 | Unknown |
Directory authorities using 2× bandwidth.
mailing list post for start mailing list post for end post suggesting link to nl, ro, lt, sc increases |
| 2017-07-31 to 2017-08-17 | Austria OR Relays Unknown |
Fluctuations of relay users in Austria. Bridge users not affected.
relay graph |
| 2017-07-29 to 2017-08-17 | meek |
Outage of meek-amazon bridge, caused by an expired certificate.
Relay Search expired certificate new certificate |
| 2017-07-15 to 2017-07-22 | Seychelles OR Relays Unknown |
Increase of relay users in the Seychelles, from 400 to 6000. Bridge users not affected.
relay graph |
| 2017-07-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "July 4 2017 Maxmind GeoLite2 Country" (geoip-db-digest 3D04F191098640F2E03B4D5F7800088D14B7EC30, geoip6-db-digest A3649B9E909C59942FB3D8F874AB4BEA36E8BEC1).
commit |
| 2017-07-04 to 2017-07-21 | obfs4 |
Outage of default obfs4 bridge frosty.
mailing list post |
| 2017-07-04 to 2017-07-21 | obfs4 |
Outage of default obfs4 bridge dragon.
mailing list post |
| 2017-07-02 |
deb.torproject.org upgrades from tor 0.2.9 to tor 0.3.0
relay versions graph tweet |
|
| 2017-07-01 | United Arab Emirates OR Relays Unknown |
Sudden drop in relay users.
graph |
| 2017-06-26 to 2017-07-02 | obfs4 |
Outage of default obfs4 bridge dragon.
mailing list post |
| 2017-06-26 to 2017-07-03 | obfs4 |
Outage of default obfs4 bridge frosty.
mailing list post |
| 2017-06-20 | meek |
Outage of meek-azure bridge.
start end |
| 2017-06-19 to 2017-06-23 | obfs4 |
Outage of default obfs4 bridge dragon.
mailing list post |
| 2017-06-18 to 2017-06-23 | obfs4 |
Outage of default obfs4 bridge frosty.
mailing list post |
| 2017-06-14 to 2017-07-06 | Mali Unknown |
Sudden increase of direct and bridge users in Mali.
relay graph bridge graph |
| 2017-06-13 | Switzerland obfs4 Unknown |
Increase in obfs4 users in Switzerland, from 200 to 400.
bridge graph transport graph |
| 2017-06-12 | obfs4 |
Increased the file descriptor limit on default obfs4 bridges ndnop3 and ndnop5 from 4096 to 32768. They had been failing bootstrap attempts from a test location in the U.S. about 40% of the time.
graph showing failed connections |
| 2017-06-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "June 8 2017 Maxmind GeoLite2 Country" (geoip-db-digest AFD609025B66305AD9FA8E0B15AF4F2BC82271F1, geoip6-db-digest A69FD14ACE46EE695F589ACE0EB7B915285B51B4).
commit |
| 2017-06-07 to 2017-12-14 | Brazil meek Unknown |
Sustained increase of meek users in Brazil, similar to the one that took place between 2016-07-21 and 2017-03-03.
graph |
| 2017-06-07 | ipv6 obfs4 |
Tor Browser 7.0 released. Adds an IPv6 address for default obfs4 bridge Lisbeth. Adds new default obfs4 bridges frosty and dragon.
blog post IPv6 ticket frosty and dragon ticket |
| 2017-05-25 | obfs4 |
Set AssumeReachable 1 on the default obfs4 bridges cymrubridge31 and cymrubridge33 in an attempt to make them publish statistics.
mailing list post |
| 2017-05-23 to 2017-06-13 | obfs4 |
Default obfs4 bridge LeifEricson rejects connections due to a broken firewall forwarding rule. This didn't affect the bridges "real" obfs4 port, but it did affect the port at that time configured in Tor Browser.
|
| 2017-05-16 | Ukraine |
Ukraine blocks Russian-operated web services. Relay and bridge users increase over 5×. May be partly attributable to the FreeU Browser , a browser produced and advertised by Mail.ru that includes a tor client.
ticket news article Reddit post relay graph bridge graph news article on FreeU |
| 2017-05-10 | Egypt OR Relays Unknown |
Drop in direct users from Egypt.
tor-talk post graph |
| 2017-05-09 to 2017-05-12 | Macau OR Relays Unknown |
Sudden temporary peak of 3k direct users in Macau.
tor-talk post graph |
| 2017-05-08 | ipv4 ipv6 |
geoip and geoip6 databases updated to "May 2 2017 Maxmind GeoLite2 Country" (geoip-db-digest B2E5105287668771E34A66F90B34982D419727EF, geoip6-db-digest 8DA8AC3C8158CBFDF7DB53BBF73338246872371A).
commit |
| 2017-05-06 | snowflake |
Set AssumeReachable 1 on the Snowflake bridge 2B280B23E1107BB62ABFC40DDCC8824814F80A72 in an attempt to make it start publishing statistics.
mailing list post |
| 2017-04-30 | meek |
The meek-amazon bridge upgrades to meek-server 0.27.
|
| 2017-04-23 | Taiwan OR Relays Unknown |
Relay users triple and begin to fluctuate in Taiwan.
tor-talk post graph |
| 2017-04-20 | meek obfs4 scramblesuit snowflake |
Release of Tor Browser 7.0a3. Changes the app.update.url. Removes the last remaining scramblesuit bridge. Changes the meek-amazon backend. Adds new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80. Changes the Snowflake bridge from the plain WebSocket snowman to the TLS WebSocket flakey.
blog post issue for Snowflake bridge issue for Snowflake bridge commit for Snowflake bridge |
| 2017-04-19 | meek obfs4 |
Tor Browser 6.5.2 is released. It changes the app.update.url. It changes the meek-amazon backend. It adds the new default obfs4 bridges cymrubridge31:80 and cymrubridge33:80.
blog post comment about app.update.url |
| 2017-04-17 to 2017-04-23 | Israel OR Relays Unknown |
Another sudden increase of direct users in Israel. Bridge users not affected.
relay graph |
| 2017-04-14 to 2017-08-20 | OR |
Directory authority maatuska's bwscanner stops operating, leading to a drop in traffic on some relays.
tor-consensus-health post about start tor-consensus-health post about end tor-dev thread analysis |
| 2017-04-06 | ipv4 ipv6 |
geoip and geoip6 databases updated to "April 4 2017 Maxmind GeoLite2 Country" (geoip-db-digest 0F3D4A456E5078CC9E49398ADCB04C40EA49B793, geoip6-db-digest 04F41F05FA167EF6EEE3FE953404AB0BCCD33008).
commit |
| 2017-04-05 to 2017-04-13 | Israel OR Relays Unknown |
Sudden increase of direct users in Israel. Bridge users not affected.
relay graph |
| 2017-03-22 | meek |
Orbot 15.4.0 beta-2 multi is released, containing the new meek-azure CDN configuration.
mailing list post commit |
| 2017-03-08 | ipv4 ipv6 |
geoip and geoip6 databases updated to "March 7 2017 Maxmind GeoLite2 Country" (geoip-db-digest 63921843E3AAA632088D189D877F836A373CD40D, geoip6-db-digest 2B93B9C6679BB09E1746F212A6DCDC6E710F5F52).
commit |
| 2017-03-07 | meek scramblesuit |
Tor Browser 6.5.1 is released, containing the new meek-azure CDN configuration, and removing the last remaining scramblesuit bridge.
blog post meek ticket scramblesuit ticket |
| 2017-03-03 | meek |
Stopped the (unused) meek-azure CDN endpoint meek-reflect.azureedge.net.
mailing list post |
| 2017-03-03 | meek |
Stopped the meek-azure CDN endpoint az786092.vo.msecnd.net.
mailing list post |
| 2017-03-03 | meek |
Stopped the meek-azure CDN endpoint az668014.vo.msecnd.net.
mailing list post |
| 2017-03-01 to 2018-11-12 | United Arab Emirates OR Relays Unknown |
Another increase in relay users, slower and more sustained than the previous one.
graph ticket about end |
| 2017-02-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "February 8 2017 Maxmind GeoLite2 Country" (geoip-db-digest C0C6099CE335916862978F77756C0B42521A74B2, geoip6-db-digest A54B14B9D47584E010F763D3EAE23C4726F4A8D5).
commit |
| 2017-02-10 to present | OR exit |
Measurement error from bandwidth authority causes decrease in measured bandwidth in Europe.
mailing list post |
| 2017-02-09 to 2017-08-01 | India obfs3 Unknown |
Gradual but large increase of obfs3 users in India, followed by slow decay. Relay users and other transports seemingly not affected.
graph |
| 2017-02-09 to 2017-03-21 | Jordan obfs3 Unknown |
Abrupt increase and decrease in obfs3 users in Jordan. Relay users and other transports seemingly not affected.
graph |
| 2017-02-06 to 2017-08-01 | United Arab Emirates obfs3 Unknown |
Increase in obfs3 users from the UAE, from 5K to 100K. Other transports not affected.
transport graph UAE bridge graph ticket |
| 2017-01-25 to 2017-04-04 | webstats Unknown |
Tor Browser update pings drop temporarily. The beginning of the drop corresponds with the release of Tor Browser 6.5.2, which changed the app.update.url. A similar effect is present in other years.
graph issue |
| 2017-01-24 |
Tor Browser 6.5 is released. It changes the app.update.url, which causes an apparent drop in update pings.
blog post graph ticket comment about app.update.url |
|
| 2017-01-24 | snowflake |
Tor Browser 7.0a1 released, including Snowflake for GNU/Linux only.
blog post issue |
| 2017-01-22 | meek |
1.0-beta release of GAEuploader, a tool that automates the setting up of meek.
mailing list post |
| 2017-01-16 to 2017-04-20 | Cameroon |
Internet shutdown in parts of Cameroon.
article article |
| 2017-01-15 to 2017-03-01 | United Arab Emirates OR Relays Unknown |
Huge spike in relay users (400k+). An anonymous contributor suggests that it may be a botnet, based on the large number of hosts with an open SMB port in the UAE.
graph metrics-team thread Reddit thread comment about botnet |
| 2017-01-09 | meek |
Decreased the rate limit on the meek-azure bridge to 2.0 MB/s, from 3.0 MB/s.
|
| 2017-01-04 | ipv4 ipv6 |
geoip and geoip6 databases updated to "January 4 2017 Maxmind GeoLite2 Country" (geoip-db-digest 672C29A4FA9BF81DE97CFE128741445E2BDE8097, geoip6-db-digest 81F380639A8E1000539204949A363FD3BFAFBA74).
commit |
2016 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2016-12-21 to 2016-12-28 | OR Relays Unknown |
Drop in relay users.
metrics-team thread thread continues |
| 2016-12-15 to present | Congo, The Democratic Republic of the |
The Democratic Republic of the Congo orders a block of social media services.
article relay graph bridge graph |
| 2016-12-13 | obfs4 |
Tor Browser 6.5a6 is released. It fixes the app.update.url. It adds (uncomments) the default obfs4 bridge NX01:443. It activates timing obfuscation for certain obfs4 bridges. It changes the port of other obfs4 bridges.
blog post |
| 2016-12-12 | Turkey OR |
Turkey blocks direct Tor connections. The order to block had come on 2016-11-04.
ticket tweet article |
| 2016-12-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "December 7 2016 Maxmind GeoLite2 Country" (geoip-db-digest 1317BB3525E85E01FB34A89E04CE549AC23D07BD, geoip6-db-digest 865048C69BEC02B37268BFBAD66D9729B21CFCF5).
commit |
| 2016-12-01 | Belarus OR Relays |
Belarus blocks the addresses of public Tor relays, apparently by RST injection. Bridges work, even unobfuscated ones.
ticket article (Russian) OONI blog post |
| 2016-11-30 to 2016-12-02 | Gambia |
Internet shutdown in Gambia.
relay graph OONI report Cloudflare blog post |
| 2016-11-22 | meek |
Decreased the rate limit on the meek-amazon bridge to 2.0 MB/s, from 3.0 MB/s.
|
| 2016-11-20 to 2016-12-22 | Saudi Arabia Bridges Unknown |
Decrease in direct users and increase in bridge users in Saudi Arabia. The increase in bridge users lasts only about one month while the number of direct users remains down.
ticket |
| 2016-11-20 | Saudi Arabia OR Unknown |
Decrease in direct users and increase in bridge users in Saudi Arabia.
ticket |
| 2016-11-18 | obfs4 |
Default obfs4 bridge Lisbeth turns on timing obfuscation (iat-mode=1).
ticket |
| 2016-11-16 |
Tor Browser 6.5a4 is released. It changes the app.update.url.
blog post ticket |
|
| 2016-11-15 | meek |
Tor Browser 6.0.6 is released, unbreaking meek on macOS 10.12 (Sierra). (See 2016-09-20 breaking event.)
blog post ticket |
| 2016-11-15 | obfs4 |
Default obfs4 bridges ndnop3 and ndnop5 turn on timing obfuscation (iat-mode).
mailing list post ticket |
| 2016-11-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "November 3 2016 Maxmind GeoLite2 Country" (geoip-db-digest 363C038D0BE61D6E0A63C43DE8EA70771ED7BEA5, geoip6-db-digest 6110A2B794AFF0180FD096A4759434CABD289C40).
commit |
| 2016-11-04 | Turkey |
Turkey orders a block on VPN services and Tor.
Turkish article English article ticket |
| 2016-11-03 to present | Turkey |
Turkey blocks Facebook, Twitter, YouTube, WhatsApp.
article |
| 2016-10-30 | meek |
Increased the rate limit on the meek-amazon bridge to 3.0 MB/s, from 1.0 MB/s.
|
| 2016-10-28 | meek |
Decreased the rate limit on the meek-amazon bridge to 1.0 MB/s, from 3.0 MB/s.
|
| 2016-10-25 to present | Egypt OR Relays |
Egypt blocks Tor directory authorities and public relays by TCP RST. Bridges work.
OONI report |
| 2016-10-19 to 2016-11-10 | meek |
Large decrease in meek users, perhaps caused by problems in Orbot 15.0.2 BETA 1 that were fixed in Orbot 15.2.0 RC8.
ticket initial email followup email Orbot mail |
| 2016-10-09 to 2016-10-25 | Israel OR Relays Unknown |
Direct users fluctuate wildly in Israel. Bridge users not affected.
graph |
| 2016-10-08 to 2016-10-09 | Turkey |
Turkey blocks storage services including Dropbox, Google Drive, OneDrive, and GitHub. Most (all?) of the blocks were rescinded the next day.
blocking article unblocking tweet unblocking article |
| 2016-10-08 | Ethiopia |
Ethiopia declares a state of emergency and implements network blocks.
OONI report |
| 2016-10-05 | ipv4 ipv6 |
geoip and geoip6 databases updated to "October 4 2016 Maxmind GeoLite2 Country" (geoip-db-digest C14DF5AE94101562DEACDD296278B0EFA3EA26E5, geoip6-db-digest A88A828020A558D37F97CF683D4521270F0511A2).
commit |
| 2016-10-02 to 2016-10-03 | Egypt OR Relays |
Reports that direct connections from Egypt are blocked; bridges are required. Maybe be the same as the block beginning 2016-10-25.
OONI report |
| 2016-09-28 | meek |
Rate limit on the meek-amazon bridge returns to 3.0 MB/s, having been set to about 1.0 MB/s for some time, cause uncertain.
|
| 2016-09-24 | obfs3 |
Default obfs3 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs3 bridge that hadn't upgraded.
|
| 2016-09-24 | obfs4 |
Default obfs4 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs4 bridge that hadn't upgraded.
|
| 2016-09-23 to 2016-11-28 | obfs3 |
Outage of default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint AF9F66B7B04F8FF6F32D455F05135250A16543C9). (Start date not known for sure, though it must have been after 2016-09-23; discussed in non-archived tor-team email.)
|
| 2016-09-23 | obfs3 |
Default obfs3 bridges ndnop0 and ndnop2 upgrade and begin reporting statistics to the new bridge authority Bifroest.
post on bridges not reporting statistics |
| 2016-09-23 | obfs3 |
Default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint AF9F66B7B04F8FF6F32D455F05135250A16543C9) upgrade and begin reporting statistics to the new bridge authority Bifroest.
|
| 2016-09-23 | obfs4 |
Default obfs3 bridges ndnop3 and ndnop5 upgrade and begin reporting statistics to the new bridge authority Bifroest.
post on bridges not reporting statistics |
| 2016-09-20 | meek |
macOS 10.12 (Sierra) is released, breaking some programs that are built with Go <1.7, including the meek-client that comes with Tor Browser. (See 2016-11-15 unbreaking event.)
ticket |
| 2016-09-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "September 6 2016 Maxmind GeoLite2 Country" (geoip-db-digest 72F8AD2CD7C97D173AD53276366EAD32B13E0A50, geoip6-db-digest B6427DEAD2291FBF8311A2233AF4960BF4009713).
commit |
| 2016-09-04 | Iran OR |
Iran intensifies the blocking begun on 2016-08-20, getting most of the remaining direct users. There is interference in the graphs from the bridge authority changeover on 2016-09-02, but because the changeover would not have affected counts of ''direct'' users, it may be a coincidence.
ticket |
| 2016-09-02 | Bridges |
The former bridge authority Tonga shuts down. Bridges that have not updated to tor 0.2.8.7 or 0.2.9.2-alpha (which include all 5 default obfs3 bridges and 3/16 default obfs4 bridges) stop reporting statistics.
shutdown notice blog post loss of reporting bridges |
| 2016-08-31 | Bridges |
CollecTor begins publishing bridge stats from the new bridge authority Bifroest.
post |
| 2016-08-24 | Bridges |
tor 0.2.8.7 and 0.2.9.2-alpha are released, changing the bridge authority from Tonga to Bifroest.
0.2.8.7 announcement |
| 2016-08-24 | China OR Unknown |
Large decrease in users in China.
relay bridge |
| 2016-08-20 | Iran OR |
Iran somehow blocks most direct Tor connections. May also affect bridge users, but it's hard to tell because there were few vanilla bridge users anyway.
ticket |
| 2016-08-18 to 2016-08-29 | Mali Unknown |
Sudden increase of direct and bridge users in Mali.
relay graph bridge graph |
| 2016-08-18 | meek |
Changed the meek-amazon CDN price class from "All" to "Use Only US, Canada and Europe."
|
| 2016-08-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "August 2 2016 Maxmind GeoLite2 Country" (geoip-db-digest 9DD185BEC4F482DDD20A0221B3DD3F40175F0123, geoip6-db-digest B1C1B6BDC9627E3D87530A2C70578AC69C20C5C6).
commit |
| 2016-07-21 to 2017-03-03 | Brazil meek Unknown |
Sustained increase in meek users in Brazil. Locals believe that they are not actual users, rather bots or something like that. End date coincides with shutdown of meek-azure before migration. Would pick up again 2017-06-07.
graph |
| 2016-07-18 | ipv4 ipv6 |
geoip and geoip6 databases updated to "July 6 2016 Maxmind GeoLite2 Country" (geoip-db-digest 19FC902B6A860BA7E4BADCB5404482995F7E0763, geoip6-db-digest 7E717154718F2065240B90F8132F305AF78C9A9D).
commit |
| 2016-07-15 | Turkey OR |
Coup attempt in Turkey. A paper (§ 4.1) reports a decline in Tor users.
paper relay graph |
| 2016-07-07 | Zimbabwe |
Four-hour block of WhatsApp in Zimbabwe.
article |
| 2016-06-12 | ipv4 ipv6 |
geoip and geoip6 databases updated to "June 7 2016 Maxmind GeoLite2 Country" (geoip-db-digest DA31976A9C7D48C2C16EA70BCE9006772A0F4A34, geoip6-db-digest FF1DD08CA9EB6528E1A6389E7154BD9586F24370).
commit |
| 2016-06-01 | Kazakhstan OR obfs4 |
Kazakhstan blocks vanilla Tor TLS. Users mostly switch to obfs4.
ticket |
| 2016-05-30 | fte |
Tor Browser 6.0 released, which lacks the fte pluggable transport on Mac.
6.0 blog post ticket |
| 2016-05-26 | ipv6 |
Release of tor 0.2.8.3-alpha. Fixes a bug that caused directory requests from IPv6 not be counted.
issue |
| 2016-05-13 | meek |
meek-google's App Engine instance is suspended and meek-google stops working.
mailing list post |
| 2016-05-11 to 2016-05-13 | Uganda |
Social media blackout in Uganda following presidential inauguration.
advox article OONI report Freedom House report |
| 2016-05-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "May 4 2016 Maxmind GeoLite2 Country" (geoip-db-digest 76631C314A048A59A1D801515CC7FD55CE719499, geoip6-db-digest C9392F0337A7509F1187890925CF7006F884ECBA).
commit |
| 2016-05-02 to 2016-05-03 | Brazil OR |
WhatsApp block in Brazil
blog post OONI report bloqueios report |
| 2016-04-28 | fte |
Tor Browser 6.0a5 and 6.0a5-hardened released, which lacks the fte pluggable transport on Mac.
6.0a5 blog post 6.0a5-hardened blog post ticket |
| 2016-04-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "April 5 2016 Maxmind GeoLite2 Country" (geoip-db-digest F9DFB82B6F1A480F07F4B87992CBFB7A48CB8DA2, geoip6-db-digest 769B499E6AE9FE0C2366141B931A3DB1B5489114).
commit |
| 2016-03-27 to 2016-03-31 | meek |
Temporarily ran an experimental branch for IPv6 counting on the meek-azure bridge.
comment |
| 2016-03-27 | meek |
Outage of meek-azure bridge, caused by an expired TLS certificate.
|
| 2016-03-04 | ipv4 ipv6 |
geoip and geoip6 databases updated to "March 3 2016 Maxmind GeoLite2 Country" (geoip-db-digest A34F49E5A871FA4D243C46C04B67BB3CAAFE6F74, geoip6-db-digest 9C8C4F7C7612849C88206726FCDA8CB85B8D27F3).
commit |
| 2016-02-24 | Turkmenistan OR Unknown |
Large drop in direct users in Turkmenistan.
graph |
| 2016-02-17 to 2016-02-21 | Uganda |
Social media blackout in Uganda during presidential election.
Freedom House report |
| 2016-02-04 | ipv4 ipv6 |
geoip and geoip6 databases updated to "February 2 2016 Maxmind GeoLite2 Country" (geoip-db-digest 9E16EDBB826B958A7B8B84674EA98B78C13F1177, geoip6-db-digest DF9538534517275080F8335DDEE4B879A3314ED4).
commit |
| 2016-01-29 to 2016-02-02 | China meek |
Temporary blocking of an Azure edge server in China.
mailing list post |
| 2016-01-16 | meek |
Increased rate limit of the meek-amazon bridge to 3 MB/s, from 1.1 MB/s.
|
| 2016-01-15 | meek |
Increased rate limit of the meek-google bridge to 3 MB/s, from 1.1 MB/s.
|
| 2016-01-14 | meek |
Increased rate limit of the meek-azure bridge to 3 MB/s, from 0.8 MB/s.
|
| 2016-01-11 | meek |
Enabled client IP statistics on the meek-amazon bridge.
comment |
| 2016-01-07 | ipv4 ipv6 |
geoip and geoip6 databases updated to "January 5 2016 Maxmind GeoLite2 Country" (geoip-db-digest 44FC92E4D3F8C9A3A49EE9A594790C52E684298A, geoip6-db-digest BB261912C96611967FE5C1AE2700C965DBB8D61C).
commit |
2015 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2015-12-31 to 2020-06-04 | Mexico |
The Telmex ISP in Mexico blocks seven directory authorities.
mailing list post article |
| 2015-12-25 | meek |
Established an unthrottled bridge C20658946DD706A7A2181159A1A04CD838570D04 for people who set up their own meek CDN configuration.
|
| 2015-12-20 | meek |
Enabled client IP statistics on the meek-google bridge.
comment |
| 2015-12-14 | meek |
Enabled client IP statistics on the meek-azure bridge.
comment |
| 2015-12-05 | ipv4 ipv6 |
geoip and geoip6 databases updated to "December 1 2015 Maxmind GeoLite2 Country" (geoip-db-digest 6346E26E2BC96F8511588CE2695E9B0339A75D32, geoip6-db-digest 43CCB43DBC653D8CC16396A882C5F116A6004F0C).
commit |
| 2015-11-18 to 2015-12-10 | Bangladesh OR obfs3 obfs4 |
Bangladesh blocks Facebook, WhatsApp, and Viber.
news article (archive) relay graph |
| 2015-11-04 | meek |
Tor Browser 5.0.4 and 5.5a4 released, containing a fixed fingerprint for meek-amazon.
5.0.4 blog post 5.5a4 blog post ticket |
| 2015-10-30 | meek |
Altered the performance settings on the meek-google App Engine instance. Set max idle instances to 2 and min pending latency to 1000 ms. This used to be configured through the web interface but is now configured in an application file, which at some point caused the settings from 2015-02-28 to be lost.
|
| 2015-10-30 | meek |
Further rate-limited the meek-azure bridge to 0.8 MB/s, from 1.1 MB/s.
|
| 2015-10-09 | ipv4 ipv6 |
geoip and geoip6 databases updated to "October 9 2015 Maxmind GeoLite2 Country" (geoip-db-digest 5BF366AD4A0572D82A1A0F6628AF8EF7725E3AB9, geoip6-db-digest 212DE17D5A368DCAFA19B95F168BFFA101145A93).
commit |
| 2015-10-09 | meek |
The fingerprint of the meek-amazon bridge changes, as a result of begin rebooted. Released Tor Browsers with the former fingerprint are unable to connect. The fingerprint changed from 4EE0CC769EB4B15A872F742EDE27D298A59DCADE to 6DDD1DB8526282837C50E9AB5D14AB50150CD624, then again to B9E7141C594AF25699E0079C1F0146F409495296. The new fingerprint shipped with Tor Browser 5.0.4 and 5.5a4 on 2015-11-04.
ticket |
| 2015-10-02 | meek |
Rate-limited the meek-azure bridge to 1.1 MB/s. (Azure grant expired.)
tor-talk post |
| 2015-09-30 to 2015-10-09 | meek |
Outage of meek-amazon caused by an expired certificate. As a result of being rebooted, the bridge also changes its fingerprint from 4EE0CC769EB4B15A872F742EDE27D298A59DCADE to 6DDD1DB8526282837C50E9AB5D14AB50150CD624.
mailing list post about start mailing list post about end ticket |
| 2015-09-24 | ipv4 ipv6 |
geoip and geoip6 databases updated to "September 3 2015 Maxmind GeoLite2 Country" (geoip-db-digest 022B9BADD23D743E51F165FB4C87E78E59F0BCB8, geoip6-db-digest DE13219FCF0F27999D1F91174CF80291B1746C95).
commit |
| 2015-09-23 | meek |
Upgraded meek-azure bridge from KVM to Xen.
blog post |
| 2015-08-11 | meek |
Tor Browser 5.0 and 5.5a1 released. They have an updated configuration to work around the meek-azure outage that started 2015-07-20.
blog post blog post ticket |
| 2015-07-29 | ipv4 ipv6 |
geoip and geoip6 databases updated to "July 8 2015 Maxmind GeoLite2 Country" (geoip-db-digest 6882B8663F74C23E26E3C2274C24CAB2E82D67A2, geoip6-db-digest F063BD5247EB9829E6B9E586393D7036656DAF44).
commit |
| 2015-07-22 | meek |
Published a workaround for the meek-azure outage that started 2015-07-20.
mailing list post |
| 2015-07-20 to 2015-08-14 | meek |
Outage of meek-azure.
mailing list post about start mailing list post about end |
| 2015-06-11 to 2015-06-13 | Bridges |
Bridge users temporarily increase, because of one bridge reporting high statistics.
issue |
| 2015-06-09 | ipv4 |
geoip database updated to "June 3 2015 Maxmind GeoLite2 Country" (geoip-db-digest D095D62E8A1607C2C3AF61366929BCAD0E6D3184).
commit |
| 2015-06-09 | ipv6 |
geoip6 database updated to "June 3 2015 Maxmind GeoLite2 Country" (geoip6-db-digest AC1BE3D0707D16AB04092FE00C9732658C926CD8).
commit |
| 2015-06-08 | meek |
Rate-limited the meek-amazon bridge to 1.1 MB/s.
|
| 2015-06-02 | meek |
Further rate-limited meek-google to 1.1 MB/s, from 1.5 MB/s.
|
| 2015-05-22 | meek |
Rate-limited the meek-google bridge to 1.5 MB/s.
|
| 2015-04-27 | obfs4 |
Release of Tor Browser 4.5, the first stable release with obfs4.
blog post |
| 2015-04-24 | ipv4 |
geoip database updated to "April 8 2015 Maxmind GeoLite2 Country" (geoip-db-digest 0A1F9C09E08F6F2490E8880664D4E863D1680A12).
commit |
| 2015-04-24 | ipv6 |
geoip6 database updated to "April 8 2015 Maxmind GeoLite2 Country" (geoip6-db-digest A6E9B5DE6F887315749B29F9C9F698215BE5240A).
commit |
| 2015-04-19 | meek obfs4 |
Release of Orbot v15 alpha 5, first release with obfs4.
mailing list post |
| 2015-04-15 | meek |
Tor Weekly News covers the meek-azure performance improvement.
blog post |
| 2015-04-08 | meek |
Implemented persistent connections for meek-azure, increasing performance.
mailing list post |
| 2015-03-09 | ipv4 |
geoip database updated to "March 3 2015 Maxmind GeoLite2 Country" (geoip-db-digest C1EB5237F2FBAF63381D8551157F13D12EFCCA25).
commit |
| 2015-03-09 | ipv6 |
geoip6 database updated to "March 3 2015 Maxmind GeoLite2 Country" (geoip6-db-digest 1F99B6B0EC78E9DB34D61AE7E0FC261D558E8E5D).
commit |
| 2015-02-28 | meek |
Altered performance settings on the meek-google App Engine instance in an effort to reduce instance hours. Set max idle instances to 4 and min pending latency to 500 ms.
|
| 2015-02-14 | meek |
Release of Orbot v15-alpha-3, first release with meek.
mailing list post |
| 2015-01-22 | ipv4 |
geoip database updated to "January 7 2015 Maxmind GeoLite2 Country" (geoip-db-digest 49D309B9663C4EFB8D126D84BBB373D7C84658C3).
commit |
| 2015-01-22 | ipv6 |
geoip6 database updated to "January 7 2015 Maxmind GeoLite2 Country" (geoip6-db-digest 9B26276EA470137894566882885AD82701D38D62).
commit |
2014 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2014-11-24 | ipv4 |
geoip database updated to "November 15 2014 Maxmind GeoLite2 Country" (geoip-db-digest DC1A94D962AE165EF4AA1F14857A23C34875F39D).
commit |
| 2014-11-24 | ipv6 |
geoip6 database updated to "November 15 2014 Maxmind GeoLite2 Country" (geoip6-db-digest 923BA7ED922B2A4B30C9B76EE7E72D1D1714BFAF).
commit |
| 2014-11-17 | obfs4 |
Release of Tor Browser 4.5-alpha-1, first alpha release with obfs4. (Tor Browser changelog says 2014-11-14.)
blog post |
| 2014-11-15 | meek |
Moved the meek-google bridge to better hardware.
|
| 2014-11-08 | meek |
Changed the meek-google App Engine instance back to the F1 class, from F2.
|
| 2014-10-31 | meek |
Changed the meek-google App Engine instance to the F2 class again, from F1.
|
| 2014-10-27 | meek |
Changed the meek-google App Engine instance back to the F1 class, from F2.
|
| 2014-10-25 | meek |
Changed the bridge backing meek-google.
|
| 2014-10-25 | meek |
Changed the meek-google App Engine instance to the F2 class, from F1.
|
| 2014-10-15 | meek scramblesuit |
Tor Browser 4.0 released. This is the first stable release with meek and ScrambleSuit built in.
blog post |
| 2014-10-14 | meek |
Enabled PublishServerDescriptor on the meek-amazon bridge. Between 2014-09-29 and 2014-10-14, meek-amazon users were not being counted.
mailing list post |
| 2014-09-29 | meek |
Changed the bridge backing meek-amazon.
|
| 2014-09-29 | China |
China blocks Instagram in response to ongoing protests in Hong Kong. A research paper by Hobbs and Roberts shows evidence for an increase in circumvention, but the measurable effect on Tor is slight if anything.
relay graph bridge graph BBC article research paper |
| 2014-09-26 to 2014-12-15 | Hong Kong |
"Umbrella Revolution" protests in Hong Kong.
relay graph bridge graph |
| 2014-09-16 | meek |
Switched meek-amazon to HTTPS.
ticket |
| 2014-09-15 | flashproxy meek |
Split the bridge running meek and flashproxy into separate processes in order to avoid spurious correlation in user counts.
mailing list post |
| 2014-08-29 to 2014-09-01 | fte |
Decrease in fte users, perhaps caused by an outage of one of the default Tor Browser bridges.
mailing list post |
| 2014-08-15 | meek |
'How to use the “meek” pluggable transport' blog post is published.
blog post |
| 2014-08-13 | ipv4 |
geoip database updated to "August 7 2014 Maxmind GeoLite2 Country" (geoip-db-digest 9EF0A1874377BFB6413ED3F9EB5504B1DB17BE13).
commit |
| 2014-08-13 | ipv6 |
geoip6 database updated to "August 7 2014 Maxmind GeoLite2 Country" (geoip6-db-digest 542D349827A88738A04332DAFF2516A384BCC8FF).
commit |
| 2014-08-12 |
Tor Browser 3.6.4 released.
blog post |
|
| 2014-08-12 | meek scramblesuit |
Tor Browser 4.0-alpha-1 released. This is the first release to have meek and ScrambleSuit built in.
blog post |
| 2014-07-28 | meek |
Set up meek-amazon CDN configuration.
|
| 2014-07-27 to 2014-09-23 | Iran |
Iran blocks Tor directory authorities.
ticket |
| 2014-07-18 | ipv4 |
geoip database updated to "July 10 2014 Maxmind GeoLite2 Country" (geoip-db-digest F2E34A314F2101E3F5AE0774660C4BA670646B8D).
commit |
| 2014-07-18 | ipv6 |
geoip6 database updated to "July 10 2014 Maxmind GeoLite2 Country" (geoip6-db-digest 45893A1BDDABACCEB346DE4644A155450FD28B0E).
commit |
| 2014-06-10 | ipv4 |
geoip database updated to "June 4 2014 Maxmind GeoLite2 Country" (geoip-db-digest BFC7453BBEAD611B7FF97AD71BE3392AA8BCFBE3).
commit |
| 2014-06-10 | ipv6 |
geoip6 database updated to "June 4 2014 Maxmind GeoLite2 Country" (geoip6-db-digest E0A79ABC85672AACD47878029C2C383D4C669335).
commit |
| 2014-06-01 to 2014-06-19 | Russia OR Relays Unknown |
Rapid increase of relay users in Russia, going from 80K to 200K before settling in around 150K.
|
| 2014-05-08 | flashproxy meek |
Reinstalled the bridge running meek and flash proxy.
|
| 2014-04-29 | flashproxy fte obfs2 obfs3 |
Release of Tor Browser 3.6, the first stable release with integrated pluggable transports. The default bridges include the transports obfs3, FTE, and flash proxy; obfs2 is supported but has no default bridges.
blog post transport graph |
| 2014-04-11 |
Release of Tor Browser 3.6-beta-2.
blog post |
|
| 2014-03-21 to 2014-04-03 | Turkey |
Twitter ban in Turkey.
article research paper |
| 2014-03-18 | flashproxy fte obfs2 obfs3 |
Release of Tor Browser 3.6-beta-1, the first release with integrated pluggable transports. The default bridges include the transports obfs3, FTE, and flash proxy; obfs2 is supported but has no default bridges.
blog post |
| 2014-02-25 | ipv4 |
geoip database updated to "February 7 2014 Maxmind GeoLite2 Country" (geoip-db-digest 182195DB4DA9A979A829012F71CF128FAF1203F7).
commit |
| 2014-02-15 | flashproxy meek |
Began running meek-server on bridge already hosting websocket-server for flash proxy.
|
| 2014-02-13 | ipv6 |
geoip6 database updated to "February 7 2014 Maxmind GeoLite2 Country" (geoip6-db-digest FB95DF46D6B29167668F4D2CAC9F947C4B2A0C26).
commit |
| 2014-02-08 | ipv4 |
geoip database updated to "February 7 2014 Maxmind GeoLite2 Country" (geoip-db-digest FA903A1122A248E107A1C17A5AC50A5852F03966).
commit |
| 2014-01-31 | meek |
First public announcement of meek.
mailing list post |
2013 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2013-12-04 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.18-rc-1-pt1 and 2.4.18-rc-2-pt1.
blog post |
| 2013-11-11 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.17-rc-1-pt2.
blog post |
| 2013-11-04 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.17-rc-1-pt1.
blog post |
| 2013-11-03 | OR Relays |
Microsoft adds the Mevade/Sefnit botnet signature to their Malicious Software Removal Tool.
blog post |
| 2013-10-27 | OR Relays |
Microsoft adds the Mevade/Sefnit botnet signature to various security scanners.
blog post |
| 2013-10-11 | ipv4 |
geoip database updated to "October 2 2013 Maxmind GeoLite Country" (geoip-db-digest A28267CED18A1D80B4298796E9FE42EC755420C0).
commit |
| 2013-09-23 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.17-beta-2-pt3.
blog post |
| 2013-09-10 | ipv4 |
geoip database updated to "September 4 2013 Maxmind GeoLite Country" (geoip-db-digest CB632F60547F141E06FB0705D1F171047165722E).
commit |
| 2013-08-19 to 2014-04-28 | OR Relays |
Relay users increase globally from about 800K to over 5M, when computers in the Mevade/Sefnit botnet began using Tor to communicate. The user count decreased in the following months through efforts to clean up the botnet. Sometime in 2014-04, the botnet switched from using Tor to using SSH.
blog post tech report analysis switch to SSH |
| 2013-08-12 | ipv4 |
geoip database updated to "August 7 2013 Maxmind GeoLite Country" (geoip-db-digest 83CCB5AF823A5CCF3C86C3CA33AF801D4E8996EC).
commit |
| 2013-08-10 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.15-beta-2-pt1.
blog post |
| 2013-07-08 | ipv4 |
geoip database updated to "July 3 2013 Maxmind GeoLite Country" (geoip-db-digest 4D558EA73DD91A0361DE3FA3E83171DCD38D1A2D).
commit |
| 2013-06-05 | ipv4 |
geoip database updated to "June 5 2013 Maxmind GeoLite Country" (geoip-db-digest 5E570BB92DBEE1D517E35DAA4A52F58FDA6BB44E).
commit |
| 2013-06-02 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.12-alpha-2-pt1.
blog post |
| 2013-05-13 | ipv4 |
geoip database updated to "May 9 2013 Maxmind GeoLite Country" (geoip-db-digest 2ADCA1913666A685B141C03E7B2F50B3DB84FDC9).
commit |
| 2013-04-08 | ipv4 |
geoip database updated to "April 3 2013 Maxmind GeoLite Country" (geoip-db-digest 7DDD315EBCDC2A8BCA47A8B5153EB697947AC851).
commit |
| 2013-03-19 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 0.2.4.11-alpha-2.
blog post |
| 2013-03-07 | ipv4 |
geoip database updated to "March 6 2013 Maxmind GeoLite Country" (geoip-db-digest CB30D739CF972BEE0EF0635838A2AD76E2171004).
commit |
| 2013-02-08 | ipv4 |
geoip database updated (geoip-db-digest 29DF86915FF87E2FBE12F3514776B7292B556CCD).
commit |
| 2013-01-13 | flashproxy obfs2 obfs3 |
Release of the pluggable transports browser bundle 2.4.7-alpha-1, containing flash proxy, obfs2, and obfs3 built in and enabled by default.
blog post ticket |
| 2013-01-05 | ipv4 |
geoip database updated to "January 2 2013 Maxmind GeoLite Country" (geoip-db-digest DBBBA6D1F6CD90E860DDD42C90A21CF8A1B8395F).
commit |
2012 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2012-12-13 | ipv4 |
geoip database updated to "December 5 2012 Maxmind GeoLite Country" (geoip-db-digest E00C7CD522D9ED6BEF69C6A904DCE51EC54EB768).
commit |
| 2012-12-06 | ipv4 |
geoip database updated to "December 5 2012 Maxmind GeoLite Country" (geoip-db-digest 5A258599E3F768D0CEFBBD26F1D039760D43BB15).
commit |
| 2012-11-28 | ipv4 |
geoip database updated to "November 7 2012 Maxmind GeoLite Country" (geoip-db-digest 0D1734EB51EC9168C6428CD771945567B927F45C).
commit |
| 2012-10-16 | ipv6 |
geoip6 database updated to "October 16 2012 Maxmind GeoLite IPv6 Country" (geoip6-db-digest 7F82A502C248B0CFBCCF6FE370919E34E04A21FA).
commit |
| 2012-07-06 | ipv4 |
geoip database updated to "May 1 2012 Maxmind GeoLite Country" (geoip-db-digest 207A8167FC83230884A7B463B8EE12385CF1874F).
commit |
| 2012-06-15 | OR |
Release of tor 0.2.3.17-beta. Changes the TLS ciphersuite list to match that of Firefox 8, to evade blocking by China.
ticket censorshipwiki entry |
| 2012-06-13 | ipv4 |
geoip database updated to "June 6 2012 Maxmind GeoLite Country" (geoip-db-digest B7DC8C42403B1E0B50C671587DE406AED8DC5831).
commit |
| 2012-05-15 to 2012-12-15 | Ethiopia OR |
Ethiopia blocks Tor TLS.
ticket blog post 1 blog post 2 sample packets tor patches |
| 2012-05-07 | ipv4 |
geoip database updated to "May 1 2012 Maxmind GeoLite Country" (geoip-db-digest 207A8167FC83230884A7B463B8EE12385CF1874F).
commit |
| 2012-04-12 | obfs2 |
Release of "Tor Obfsproxy Browser Bundle" 2.3.12-4.
package archive commit |
| 2012-04-11 | ipv4 |
geoip database updated to "April 3 2012 Maxmind GeoLite Country" (geoip-db-digest A27BE984989AB31C50D0861C7106B17A7EEC3756).
commit |
| 2012-03-28 | ipv6 |
geoip6 database updated to "February 22 2012 Maxmind GeoLite IPv6 Country" (geoip6-db-digest 2B442C5D9781145C0172ECC250DF71E25F0A957E).
commit |
| 2012-03-08 | ipv4 |
geoip database updated to "March 6 2012 Maxmind GeoLite Country" (geoip-db-digest 51EA5ED511A11D31FB4DAFCEC05B5347F6462B56).
commit |
| 2012-03-01 to 2013-08-19 | Kazakhstan OR |
Kazakhstan blocks Tor TLS by ClientHello and ServerHello fingerprints.
ticket tor patches |
| 2012-03-01 | ipv6 |
geoip6 database updated to "February 22 2012 Maxmind GeoLite IPv6 Country" (geoip6-db-digest E39E1056F219DDF6E1C12F27CC50963D0F9774ED).
commit |
| 2012-02-22 | obfs2 |
Release of "Tor Obfsproxy Browser Bundle" 2.3.12-3, for Windows and Linux only.
package archive commits |
| 2012-02-18 | obfs2 |
Release of "Tor Obfsproxy Browser Bundle" 2.3.12-2, for Windows and Mac OS X only.
package archive commit |
| 2012-02-13 | obfs2 |
Release of "Tor Obfsproxy Browser Bundle" 2.3.12, containing 13 obfs2 bridges (removed 128.30.30.25:51420 relative to version 2.3.10).
blog post package archive commits |
| 2012-02-11 | obfs2 |
First release of "Tor Obfsproxy Browser Bundle", containing 2 obfs2 bridges. Version number unknown; no bundle containing 2 bridges exists at https://archive.torproject.org/tor-package-archive/obfsproxy/.
blog post |
| 2012-02-11 | obfs2 |
Release of "Tor Obfsproxy Browser Bundle" 2.3.10, containing 14 obfs2 bridges.
blog post package archive commits |
| 2012-02-09 | ipv4 |
geoip database updated to "February 7 2012 Maxmind GeoLite Country" (geoip-db-digest 3BCA888461BCC79CA29E78603DC197090F8C96CB).
commit |
| 2012-02-08 to 2012-02-11 | Iran OR |
Iran partially blocks Tor.
blog post relay graph bridge graph |
| 2012-01-05 | ipv4 |
geoip database updated to "January 3 2012 Maxmind GeoLite Country" (geoip-db-digest DCF8969A2B080FAE2664F1D46F758B1CB08C286C).
commit |
2011 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2011-12-08 | ipv4 |
geoip database updated to "December 6 2011 Maxmind GeoLite Country" (geoip-db-digest 916A3CA8B7DF61473D5AE5B21711F35F301CE9E8).
commit |
| 2011-11-07 | ipv4 |
geoip database updated to "November 1 2011 Maxmind GeoLite Country" (geoip-db-digest F730E870057D6CA19EE55BC80604E41BEEB5B607).
commit |
| 2011-10-13 | ipv4 |
geoip database updated to "October 4 2011 Maxmind GeoLite Country" (geoip-db-digest 25138998CF10DDAC1B4F745EBC6790DA4E5A6F1B).
commit |
| 2011-09-13 | OR |
Release of tor 0.2.3.4-alpha. Changes the expiration time of TLS certificates, to evade blocking in Iran.
ticket censorshipwiki entry |
| 2011-09-12 | ipv4 |
geoip database updated to "September 6 2011 Maxmind GeoLite Country" (geoip-db-digest F39A5F424559CF5654C793531982BA536D1CEDCA).
commit |
| 2011-08-08 | ipv4 |
geoip database updated to "August 2 2011 Maxmind GeoLite Country" (geoip-db-digest F8D51025DD9B5CC482B3171D3B43FB81868568A9).
commit |
| 2011-07-07 | ipv4 |
geoip database updated to "July 1 2011 Maxmind GeoLite Country" (geoip-db-digest CCABBFAF7036BA3E7580D7F71845AC0673B9E922).
commit |
| 2011-06-05 | ipv4 |
geoip database updated to "June 1 2011 Maxmind GeoLite Country" (geoip-db-digest C5C0785F3E1DF5319609B87FCA295FC7D0CE6215).
commit |
| 2011-05-11 | ipv4 |
geoip database updated to "May 1 2011 Maxmind GeoLite Country" (geoip-db-digest 9CA15F4E4D1235116956F3DEA9B3E8A714D15D5D).
commit |
| 2011-04-04 | ipv4 |
geoip database updated to "April 1 2011 Maxmind GeoLite Country" (geoip-db-digest 754DCDF6CCF1BB631B0C14D2EBFECE649501A88D).
commit |
| 2011-03-08 | ipv4 |
geoip database updated to "March 1 2011 Maxmind GeoLite Country" (geoip-db-digest 8CCD8DB72C71E6D764DF888511DC37DD5A13ED97).
commit |
| 2011-02-03 | ipv4 |
geoip database updated to "February 1 2011 Maxmind GeoLite Country" (geoip-db-digest 12EBCF2FB208695E447EF151038881F08FDCBFD8).
commit |
| 2011-01-25 | OR |
Release of tor 0.2.2.22-alpha. Changes the TLS Diffie–Hellman parameter to match that used by Apache mod_ssl, to evade blocking in Iran.
censorshipwiki entry tor TLSHistory |
| 2011-01-10 | ipv4 |
geoip database updated to "January 1 2011 Maxmind GeoLite Country" (geoip-db-digest 9D4EBE51F94EAAD7DC40DF26837E5E892345BB7C).
commit |
2010 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2010-12-08 | ipv4 |
geoip database updated to "December 1 2010 Maxmind GeoLite Country" (geoip-db-digest 7726B7A80C3EC4534EA2A5C62D2AC1096931DD39).
commit |
| 2010-10-04 | ipv4 |
geoip database updated to "October 1 2010 Maxmind GeoLite Country" (geoip-db-digest F090EBEEC4A0E05B2A2D33EE9F2AA8B73FB2C350).
commit |
| 2010-09-08 | ipv4 |
geoip database updated to "September 1 2010 Maxmind GeoLite Country" (geoip-db-digest 952F4038C3D493AB62673577191B0F779A40D7BB).
commit |
| 2010-08-03 | ipv4 |
geoip database updated to "August 1 2010 Maxmind GeoLite Country" (geoip-db-digest 60B2587014A74FF8E5A1BD52AD081F02D57098D5).
commit |
| 2010-06-02 | ipv4 |
geoip database updated to "June 1 2010 Maxmind GeoLite Country" (geoip-db-digest 0F7A148E7A934235263345AD913E44C9E44BF495).
commit |
| 2010-05-06 | ipv4 |
geoip database updated to "May 1 2010 Maxmind GeoLite Country" (geoip-db-digest 2F36F923FD3368E208924A81169F8B4B3468A6E8).
commit |
2009 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2009-06-03 | ipv4 |
geoip database updated to "June 3 2009 ip-to-country db" (geoip-db-digest 507DBE49979319B61E8EC637BDC72D53C91A907A).
commit |
| 2009-04-12 | ipv4 |
geoip database updated to "April 3 2009 ip-to-country db" (geoip-db-digest 94674ED08A3AB5A5722749314870F176776CBEA3).
commit |
| 2009-03-05 | ipv4 |
geoip database updated to "February 26 2009 ip-to-country db" (geoip-db-digest 07D75C8790B6D575061EE3D19B46BD4478B7AAEC).
commit |
| 2009-02-12 | ipv4 |
geoip database updated to "January 23 2009 ip-to-country db" (geoip-db-digest E6455B416994835C4F355AF8386F71D606C56937).
commit |
| 2009-01-06 | ipv4 |
geoip database updated to "December 19 2008 ip-to-country db" (geoip-db-digest 79365660714FF9D3F5AD1DE427A604251188F94B).
commit |
2008 #
| Dates | Places/Protocols | Description and Links |
|---|---|---|
| 2008-09-23 | ipv4 |
geoip database updated to "September 1 2008 ip-to-country db" (geoip-db-digest 64129F664F291BC3D2D746BBBFD83FE7CB2264D3).
commit |
| 2008-06-11 | ipv4 |
geoip database updated to "June 9 2008 ip-to-country db" (geoip-db-digest 43DBBB309037C48A70B2C31512E21D45E95C72B0).
commit |
| 2008-05-28 | ipv4 |
geoip database updated (geoip-db-digest C4F4C0FDC9D15AEA7132404B6D51E11ACB828023).
commit |
| 2008-05-28 | ipv4 |
geoip database updated (geoip-db-digest 947841EF4BED1B4E891BBDEC3E7643D62AFDD544).
commit |