financial statements

Transparency, Openness, and Our 2018 and 2019 Finances

After completing standard audits for 2017-2018 and for 2019, our federal tax filings and audits are available. We publish all of our related tax documents for transparency.

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Transparency, Openness, and Our 2016 and 2017 Financials

After completing a standard audit for 2016, our 2016 federal tax filings and audit, along with our 2017 federal tax filings, are available. We publish all of our related tax documents because we believe in transparency.

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Transparency, Openness, and our 2015 Financials

After completing the standard audit, our 2015 state and federal tax filings are available.

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Transparency, Openness, and our 2014 Financials

After completing the standard audit, our 2014 state and federal tax filings are available.

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Transparency, Openness, and our 2013 Financials

2013 was a great year for Tor.

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Upcoming Events

July 12, 2021 - July 16, 2021

Privacy Enhancing Technologies Symposium (PETS)

August 27, 2021

Free and Open Communications on the Internet (FOCI) workshop

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Recent Updates

Internet Freedom, Privacy, & LGBTQIA+ Human Rights

Every June, we recognize Pride month because internet freedom and the human rights of LGBTQIA+ people go hand in hand.

New stable security releases: 0.3.5.15, 0.4.4.9, 0.4.5.9, 0.4.6.5

After months of work, we have a new stable release series! If you build Tor from source, you can download the source code for 0.4.6.5 on the download page. Packages should be available within the next several weeks, with a new Tor Browser around the end of the week.

Because this release includes security fixes, we are also releasing updates for our other supported releases. You can find their source at https://dist.torproject.org:

0.3.5.15 (gpg signature) (ChangeLog)
0.4.4.9 (gpg signature) (ChangeLog) [Note that 0.4.4.9 hits end-of-life tomorrow; this is the last supported 0.4.4.9 release.]
0.4.5.9 (gpg signature) (ChangeLog)

Tor 0.4.6.5 is the first stable release in its series. The 0.4.6.x series includes numerous features and bugfixes, including a significant improvement to our circuit timeout algorithm that should improve observed client performance, and a way for relays to report when they are overloaded.

This release also includes security fixes for several security issues, including a denial-of-service attack against onion service clients, and another denial-of-service attack against relays. Everybody should upgrade to one of 0.3.5.15, 0.4.4.9, 0.4.5.9, or 0.4.6.5.

Below are the changes since 0.4.5.8. For a list of changes since 0.4.6.4-rc, see the ChangeLog file.

Changes in version 0.4.6.5 - 2021-06-14

Major bugfixes (security):
- Don't allow relays to spoof RELAY_END or RELAY_RESOLVED cell on half-closed streams. Previously, clients failed to validate which hop sent these cells: this would allow a relay on a circuit to end a stream that wasn't actually built with it. Fixes bug 40389; bugfix on 0.3.5.1-alpha. This issue is also tracked as TROVE-2021- 003 and CVE-2021-34548.
Major bugfixes (security, defense-in-depth):
- Detect more failure conditions from the OpenSSL RNG code. Previously, we would detect errors from a missing RNG implementation, but not failures from the RNG code itself. Fortunately, it appears those failures do not happen in practice when Tor is using OpenSSL's default RNG implementation. Fixes bug 40390; bugfix on 0.2.8.1-alpha. This issue is also tracked as TROVE-2021-004. Reported by Jann Horn at Google's Project Zero.

New Release: Tor Browser 10.5a16

Tor Browser 10.5a16 is now available from the Tor Browser download page and also from our

New Release: Tor Browser 10.0.17

Tor Browser 10.0.17 is now available from the Tor Browser download page and also from our