progress report | Tor Blog

Tor's New Anti-Censorship Team: Defending The Open Internet

We formed an anti-censorship team to understand network censorship, build technology to circumvent it, and to make the Tor network accessible to everyone.

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Announcing Tor Reports

For the past four years, I've been summarizing progress of Tor on the blog.

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April 2012 Progress Report

Our progress report for April 2012 is now available.

March 2012 Progress Report

Our progress report for March 2012 is now available.

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February 2012 Progress Report

Our progress report for February 2012 is now available. It hightlights recent work with deep packet inspection and censorship circumvention in Iran and Kazakhstan.

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January 2012 Progress Report

Our progress report for January 2012 is available now.

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December 2011 Progress Report

Our progress report for December 2011 is available as a pdf with pretty graphs an

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November 2011 Progress Report

The progress report for November 2011 is released as pdf and

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October 2011 Progress Report

The October 2011 Progress report is available in PDF and

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September 2011 Progress Report

In September 2011 we made progress in a number of areas, such as handling issues in Iran's use of DPI to block tor, new versions of Tor, Tails 0.8 release, and more.

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Upcoming Events

November 26, 2020

Tor introduction @ LHC (Campinas)

Dia 26 de novembro às 20 horas, LHC Convida Gus "Introdução ao Tor"

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Recent Updates

New alpha release: Tor 0.4.5.2-alpha

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.5.2-alpha from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release by mid-December.

Remember, this is an alpha release: you should only run this if you'd like to find and report more bugs than usual.

Tor 0.4.5.2-alpha is the second alpha release in the 0.4.5.x series. It fixes several bugs present in earlier releases, including one that made it impractical to run relays on Windows. It also adds a few small safety features to improve Tor's behavior in the presence of strange compile-time options, misbehaving proxies, and future versions of OpenSSL.

Changes in version 0.4.5.2-alpha - 2020-11-23

Major bugfixes (relay, windows):
- Fix a bug in our implementation of condition variables on Windows. Previously, a relay on Windows would use 100% CPU after running for some time. Because of this change, Tor now require Windows Vista or later to build and run. Fixes bug 30187; bugfix on 0.2.6.3-alpha. (This bug became more serious in 0.3.1.1-alpha with the introduction of consensus diffs.) Patch by Daniel Pinto.
Minor features (compilation):
- Disable deprecation warnings when building with OpenSSL 3.0.0 or later. There are a number of APIs newly deprecated in OpenSSL 3.0.0 that Tor still requires. (A later version of Tor will try to stop depending on these APIs.) Closes ticket 40165.