“Tor metrics are the ammunition that lets Tor and other security advocates argue for a more private and secure Internet from a position of data, rather than just dogma or perspective.”
— Bruce Schneier (June 1, 2016)
We estimate the number of users by analyzing the requests induced by clients to relays and bridges.
This graph shows the estimated number of directly-connecting clients; that is, it excludes clients connecting via bridges. These estimates are derived from the number of directory requests counted on directory authorities and mirrors. Relays resolve client IP addresses to country codes, so that graphs are available for most countries. Furthermore, it is possible to display indications of censorship events as obtained from an anomaly-based censorship-detection system (for more details, see this technical report). For further details see these questions and answers about user statistics.
The following events have been manually collected on this wiki page and might be related to the displayed graph.
|Dates||Places/Protocols||Description and Links|
|2016-03-27||meek||Outage of meek-azure bridge, caused by an expired TLS certificate.|
|2016-03-27 to 2016-03-31||meek||Temporarily ran an experimental branch for IPv6 counting on the meek-azure bridge.|
|2016-03-04||ipv4||geoip database updated to "March 3 2016 Maxmind GeoLite2 Country" (|
|2016-03-04||ipv6||geoip6 database updated to "March 3 2016 Maxmind GeoLite2 Country" (|
|2016-02-24||Turkmenistan <OR> Unknown||Large drop in direct users in Turkmenistan.|
|2016-02-04||ipv4||geoip database updated to "February 2 2016 Maxmind GeoLite2 Country" (|
|2016-02-04||ipv6||geoip6 database updated to "February 2 2016 Maxmind GeoLite2 Country" (|
|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.|
|2016-01-07||ipv4||geoip database updated to "January 5 2016 Maxmind GeoLite2 Country" (|
|2016-01-07||ipv6||geoip6 database updated to "January 5 2016 Maxmind GeoLite2 Country" (|
|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.|
|2015-12-14||meek||Enabled client IP statistics on the meek-azure bridge.|
|2015-12-05||ipv4||geoip database updated to "December 1 2015 Maxmind GeoLite2 Country" (|
|2015-12-05||ipv6||geoip6 database updated to "December 1 2015 Maxmind GeoLite2 Country" (|
|2015-11-04||meek||Tor Browser 5.0.4 and 5.5a4 released, containing a fixed fingerprint for meek-amazon.|
5.0.4 blog post5.5a4 blog postTicket
This material is supported in part by the National Science Foundation under Grant No. CNS-0959138. Any opinions, finding, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. "Tor" and the "Onion Logo" are registered trademarks of The Tor Project, Inc.. Data on this site is freely available under a CC0 no copyright declaration: To the extent possible under law, the Tor Project has waived all copyright and related or neighboring rights in the data. Graphs are licensed under a Creative Commons Attribution 3.0 United States License.