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Tor Browser 7.5a10 is released

Tor Browser 7.5a10 is now available from the Tor Browser Project page and also from our

Making Tor Browser Updates Stable and Reliable with Fastly

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Tor Browser 7.5a9 is released

Tor Browser 7.5a9 is now available from the Tor Browser Project page and also from our

Tor Browser 7.0.11 is released

Tor Browser 7.0.11 is now available from the Tor Browser Project page and also from our

Tor Browser 7.5a8 is released

Tor Browser 7.5a8 is now available from the Tor Browser Project page and also from our

Tor Browser 7.0.10 is released

Tor Browser 7.0.10 is now available from the Tor Browser Project page and also from our

Tor Browser 7.5a7 is released

Note: Tor Browser 7.5a7 is a security bugfix release in the alpha channel for macOS and Linux users only.

Tor Browser 7.0.9 is released

Note: Tor Browser 7.0.9 is a security bugfix release for macOS and Linux users only. Users on Windows are not affected and stay on Tor Browser 7.0.8.

Tor Browser 7.0.8 is released

Tor Browser 7.0.8 is now available from the Tor Browser Project page and also from our

Tor Browser 7.5a6 is released

Tor Browser 7.5a6 is now available from the Tor Browser Project page and also from our

Upcoming Events

January 06, 2018

asn, vasilis and others at Hackerspace.gr, Athens, Greece

January 16, 2018

Alison does a Library Freedom Project training at the University of Washington

January 25, 2018

Sukhbir does a workshop at Toronto Public Library (Data Privacy Day)

January 26, 2018

Alison does a Library Freedom Project training at Georgetown University

February 17, 2018

Alison does a Tor talk at Barnard College's "Scholar and Feminist" conference

See All Upcoming Events

Recent Updates

2017 Was a Big Year for Tor

We achieved a lot in the last 12 months.

The free and open internet was under attack in 2017, but Tor was there to fight for privacy and security every step of the way.

Volunteer Spotlight: Kat, a Privacy Activism Veteran

Tor mural painted by Ryan 'Henry' Ward.

New Program Turns Librarians into Privacy Advocates

Tor 0.3.2.8-rc is released, with important updates for relays

Tor 0.3.2.8-rc fixes a pair of bugs in the KIST and KISTLite schedulers that had led servers under heavy load to overload their outgoing connections. All relay operators running earlier 0.3.2.x versions should upgrade. This version also includes a mitigation for over-full DESTROY queues leading to out-of-memory conditions: if it works, we will soon backport it to earlier release series.

This is the second release candidate in the 0.3.2 series. If we find no new bugs or regression here, then the first stable 0.3.2 release will be nearly identical to this.

You can download the source from the usual place on the website. Binary packages should be available soon. There probably won't be a Tor Browser release for this one; this issues fixed here are mainly (but not exclusively) relevant to relays.

Changes in version 0.3.2.8-rc - 2017-12-21

Major bugfixes (KIST, scheduler):
- The KIST scheduler did not correctly account for data already enqueued in each connection's send socket buffer, particularly in cases when the TCP/IP congestion window was reduced between scheduler calls. This situation lead to excessive per-connection buffering in the kernel, and a potential memory DoS. Fixes bug 24665; bugfix on 0.3.2.1-alpha.
Minor features (geoip):
- Update geoip and geoip6 to the December 6 2017 Maxmind GeoLite2 Country database.