There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.4.4-rc from the download page. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely in the coming weeks.

Remember, this is a release candidate, not a a stable release: you should only run this if you'd like to find and report more bugs than usual.

Tor 0.4.4.4-rc is the first release candidate in its series. It fixes several bugs in previous versions, including some that caused annoying behavior for relay and bridge operators.

Changes in version 0.4.4.4-rc - 2020-08-13

• Minor features (security):
  • Channels using obsolete versions of the Tor link protocol are no longer allowed to circumvent address-canonicity checks. (This is only a minor issue, since such channels have no way to set ed25519 keys, and therefore should always be rejected for circuits that specify ed25519 identities.) Closes ticket 40081.
• Minor features (defense in depth):
  • Wipe more data from connection address fields before returning them to the memory heap. Closes ticket 6198.

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.3.4-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely later this week.

This is a release candidate: unless we find new significant bugs in it, the stable release for the 0.4.3.x series will be substantially the same as this release.

Tor 0.4.3.4-rc is the first release candidate in its series. It fixes several bugs from earlier versions, including one affecting DoS defenses on bridges using pluggable transports.

Changes in version 0.4.3.4-rc - 2020-04-13

• Major bugfixes (DoS defenses, bridges, pluggable transport):
  • Fix a bug that was preventing DoS defenses from running on bridges with a pluggable transport. Previously, the DoS subsystem was not given the transport name of the client connection, thus failed to find the GeoIP cache entry for that client address. Fixes bug 33491; bugfix on 0.3.3.2-alpha.
• Minor feature (sendme, flow control):
  • Default to sending SENDME version 1 cells. (Clients are already sending these, because of a consensus parameter telling them to do so: this change only affects what clients would do if the consensus didn't contain a recommendation.) Closes ticket 33623.

There's a new release candidate available for download. If you build Tor from source, you can download the source code for 0.4.2.4-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely by December 3.

Remember, this is a release candidate: there may still be more bugs here than usual. We'd love to know about any new ones, so that we can try to get them fixed before we call this series stable.

Tor 0.4.2.4-rc is the first release candidate in its series. It fixes several bugs from earlier versions, including a few that would result in stack traces or incorrect behavior.

Changes in version 0.4.2.4-rc - 2019-11-15

• Minor features (build system):
  • Make pkg-config use --prefix when cross-compiling, if PKG_CONFIG_PATH is not set. Closes ticket 32191.
• Minor features (geoip):
  • Update geoip and geoip6 to the November 6 2019 Maxmind GeoLite2 Country database. Closes ticket 32440.

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.3.5.6-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release by early February.

There's a new alpha release available for download. If you build Tor from source, you can download the source code for Tor 0.3.4.6-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release by some time next month.

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

Tor 0.3.4.6-rc fixes several small compilation, portability, and correctness issues in previous versions of Tor. This version is a release candidate: if no serious bugs are found, we expect that the stable 0.3.4 release will be (almost) the same as this release.

Changes in version 0.3.4.6-rc - 2018-08-06

• Major bugfixes (event scheduler):
  • When we enable a periodic event, schedule it in the event loop rather than running it immediately. Previously, we would re-run periodic events immediately in the middle of (for example) changing our options, with unpredictable effects. Fixes bug 27003; bugfix on 0.3.4.1-alpha.
• Minor features (compilation):
  • When building Tor, prefer to use Python 3 over Python 2, and more recent (contemplated) versions over older ones. Closes ticket 26372.

There's a new release candidate available for download. If you build Tor from source, you can download the source code for 0.3.3.5-rc from the usual place on the website. If you don't build Tor from source, don't worry! Updated packages should be available over the coming weeks, with a new alpha Tor Browser release some time this week.

Tor 0.3.0.5-rc fixes a few remaining bugs, large and small, in the 0.3.0 release series.

Tor 0.3.0.4-rc fixes some remaining bugs, large and small, in the 0.3.0 release series, and introduces a few reliability features to keep them from coming back.