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

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Recent Updates

The State of IPv6 support on the Tor network

In our last article, published in

New Release: Tor Browser 10.0.8

Tor Browser 10.0.8 is now available from the Tor Browser download page and also from our

New release candidate: Tor 0.4.5.3-rc

There's a new release candidate available for download. If you build Tor from source, you can download the source code for 0.4.5.3-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release in 3-4 days.

We're getting closer and closer to stable here, so I hope that people will try this one out and report any bugs they find.

Tor 0.4.5.3-rc is the first release candidate in its series. It fixes several bugs, including one that broke onion services on certain older ARM CPUs, and another that made v3 onion services less reliable.

Though we anticipate that we'll be doing a bit more clean-up between now and the stable release, we expect that our remaining changes will be fairly simple. There will be at least one more release candidate before 0.4.5.x is stable.

Changes in version 0.4.5.3-rc - 2021-01-12

Major bugfixes (onion service v3):
- Stop requiring a live consensus for v3 clients and services, and allow a "reasonably live" consensus instead. This allows v3 onion services to work even if the authorities fail to generate a consensus for more than 2 hours in a row. Fixes bug 40237; bugfix on 0.3.5.1-alpha.
Minor features (crypto):
- Fix undefined behavior on our Keccak library. The bug only appeared on platforms with 32-byte CPU cache lines (e.g. armv5tel) and would result in wrong digests. Fixes bug 40210; bugfix on 0.2.8.1-alpha. Thanks to Bernhard Übelacker, Arnd Bergmann and weasel for diagnosing this.

In memoriam of Karsten Loesing

It's with deep sorrow that we share that our dear friend, colleague, and Tor core contributor Karsten Loesing passed away on the afternoon of Friday, December 18, 2020.