“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.
The manually collected events in this table do not necessarily match the automatically generated possible censorship events shown in the graph.
|Dates||Places/Protocols||Description and Links|
|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.|
TicketNews articleReddit postRelay graphBridge graphNews article on FreeU
|2017-05-08||ipv4||geoip database updated to "May 2 2017 Maxmind GeoLite2 Country" (|
|2017-05-08||ipv6||geoip6 database updated to "May 2 2017 Maxmind GeoLite2 Country" (|
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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.