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New Release: Tor Browser 10.0.10

by sysrqb | February 03, 2021

Tor Browser 10.0.10 is now available from the Tor Browser download page and also from our

  • 8 comments

New releases: Tor 0.3.5.13, 0.4.3.8, and 0.4.4.7

by nickm | February 03, 2021

We have a new stable release today. If you build Tor from source, you can download the source code for 0.4.4.7 on the download page. Packages should be available within the next several weeks, with a new Tor Browser later this month.

We're also releasing updates for older stable release series. You can download 0.3.5.13 (changelog) and 0.4.3.8 (changelog) from dist.torproject.org. Note that the 0.4.3.x series will no longer be supported after 15 February.

Tor 0.4.4.7 backports numerous bugfixes from later releases, including one that made v3 onion services more susceptible to denial-of-service attacks, and a feature that makes some kinds of DoS attacks harder to perform.

Changes in version 0.4.4.7 - 2021-02-03

  • Major bugfixes (onion service v3, backport from 0.4.5.3-rc):
    • 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.
  • Major feature (exit, backport from 0.4.5.5-rc):
    • Re-entry into the network is now denied at the Exit level to all relays' ORPorts and authorities' ORPorts and DirPorts. This change should help mitgate a set of denial-of-service attacks. Closes ticket 2667.

 

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New release candidate: Tor 0.4.5.5-rc

by nickm | February 01, 2021

There's a new release candidate available for download.

  • 1 comment
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New Release: Tor Browser 10.0.9

by sysrqb | January 26, 2021

Tor Browser 10.0.9 is now available from the Tor Browser download page and also from our

  • 24 comments

New Release: Tor Browser 10.5a8

by sysrqb | January 26, 2021

Tor Browser 10.5a8 is now available from the Tor Browser Alpha download page and also from our

  • 6 comments

2020 Fundraising Results: Thank You!

by alsmith | January 25, 2021

Thank you to everyone who made a donation in 2020! You make it possible to resist the surveillance pandemic. You’ve made it possible for the Tor Project and the tools we support to survive a very difficult time, and to prepare for 2021 with ambitious plans.

  • 7 comments

New release candidate: Tor 0.4.5.4-rc

by nickm | January 22, 2021

There's a new release candidate available for download. If you build Tor from source, you can download the source code for 0.4.5.4-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely around this coming Tuesday.

Tor 0.4.5.4-rc is the second release candidate in its series. It fixes several bugs present in previous releases.

We expect that the stable release will be the same, or almost the same, as this release candidate, unless serious bugs are found.

Changes in version 0.4.5.4-rc - 2021-01-22

  • Major bugfixes (authority, IPv6):
    • Do not consider multiple relays in the same IPv6 /64 network to be sybils. Fixes bug 40243; bugfix on 0.4.5.1-alpha.
  • Major bugfixes (directory cache, performance, windows):
    • Limit the number of items in the consensus diff cache to 64 on Windows. We hope this will mitigate an issue where Windows relay operators reported Tor using 100% CPU, while we investigate better solutions. Fixes bug 24857; bugfix on 0.3.1.1-alpha.

 

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New Release: Tor Browser 10.5a7

by sysrqb | January 19, 2021

Tor Browser 10.5a7 is now available from the Tor Browser Alpha download page and also from our

  • 19 comments

The State of IPv6 support on the Tor network

by gaba | January 14, 2021

In our last article, published in RIPE's website, we described the work that happened in 2020 related to giving IPv6 support to the Tor network. Tor 0.4.5.1-alpha is the first release that includes all the work described in the RIPE article. Relays running 0.4.5.1-alpha are the first to report IPv6 bandwidth statistics.

  • 2 comments

New Release: Tor Browser 10.0.8

by sysrqb | January 13, 2021

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

  • 48 comments

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Recent Updates

Learning more about our users

by duncan | February 24, 2021

At the Tor Project we practice user-centered design.

New Release: Tor Browser 10.5a11

by gk | February 24, 2021

Tor Browser 10.5a11 is now available from the Tor Browser Alpha download page and also from our

New Release: Tor Browser 10.0.12

by sysrqb | February 23, 2021

Tor Browser 10.0.12 is now available from the Tor Browser download page and also from our

New Release: Tor 0.4.5.6

by nickm | February 15, 2021

After months of work, we have a new stable release series! If you build Tor from source, you can download the source code for 0.4.5.6 on the download page. Packages should be available within the next several weeks, with a new Tor Browser likely next week.

The Tor 0.4.5.x release series is dedicated to the memory of Karsten Loesing (1979-2020), Tor developer, cypherpunk, husband, and father. Karsten is best known for creating the Tor metrics portal and leading the metrics team, but he was involved in Tor from the early days. For example, while he was still a student he invented and implemented the v2 onion service directory design, and he also served as an ambassador to the many German researchers working in the anonymity field. We loved him and respected him for his patience, his consistency, and his welcoming approach to growing our community.

This release series introduces significant improvements in relay IPv6 address discovery, a new "MetricsPort" mechanism for relay operators to measure performance, LTTng support, build system improvements to help when using Tor as a static library, and significant bugfixes related to Windows relay performance. It also includes numerous smaller features and bugfixes.

Below are the changes since 0.4.4.7. For a list of changes since 0.4.5.5-rc, see the ChangeLog file.

Changes in version 0.4.5.6 - 2021-02-15

  • Major features (build):
    • When building Tor, first link all object files into a single static library. This may help with embedding Tor in other programs. Note that most Tor functions do not constitute a part of a stable or supported API: only those functions in tor_api.h should be used if embedding Tor. Closes ticket 40127.
  • Major features (metrics):
    • Introduce a new MetricsPort which exposes, through an HTTP interface, a series of metrics that tor collects at runtime. At the moment, the only supported output format is Prometheus data model. Closes ticket 40063. See the manual page for more information and security considerations.

 

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