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Tor Browser and Onion Services - Challenges and Opportunities

by gk | October 05, 2020
Maintaining a browser like Tor Browser has its challenges but also its rewards.
  • 38 comments

End of #MoreOnionsPorFavor campaign

by ggus | August 25, 2020

This week we're officially wrapping up the campaign #MoreOnionsPorFavor.

  • 8 comments

How to stop the onion denial (of service)

by asn | August 18, 2020

As you might have heard, some onion services have been experiencing issues with denial-of-service (DoS) attacks over the past few years. In this post, we would like to present you with two options that we believe can provide a long-term defense to the problem while maintaining the usability and security of onion services.

  • 46 comments
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Onion Service version 2 deprecation timeline

by dgoulet | July 02, 2020

From today (July 2nd, 2020), the Internet has around 16 months to migrate from onion services v2 to v3 once and for all.

  • 63 comments

Unveiling the new Tor Community portal

by ggus | May 19, 2020

Today, we are officially launching our Community portal. This is part of our continuous effort to better organize all of our different content into portals. The Community portal contains six sections: Training, Outreach, Onion Services, Localization, User Research, and Relay Operations. It's about time that the Tor Project has a dedicated place to help you to help Tor!

  • 22 comments

Cooking with Onions: Reclaiming the Onionbalance

by asn | March 17, 2020

Onionbalance is one of the standard ways onion service administrators can load balance onion services, but it didn't work for v3 onions. Until now.

  • 8 comments
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Tor in the Media: 2019

by steph | February 05, 2020

In 2019, mainstream coverage of privacy wins and challenges increased, and with that, so did coverage of the Tor Project.

  • 15 comments

Reflections from Our Stockholm All Hands

by isabela | July 25, 2019

Through partnership with our community and our community’s broader connections, we turned limited resources into a safe space to cultivate connections, collaboration, and progress toward the vision and values that we are all working towards at Tor.

  • 16 comments

Strength in Numbers: An Entire Ecosystem Relies on Tor

by al | December 13, 2018

If the Tor Project, the Tor network, and Tor Browser were to disappear, what would happen? Not only would millions of global, daily users lose access to Tor’s software, but the diverse ecosystem of privacy, security, and anti-censorship applications that rely on the Tor network would cease to function.

  • 11 comments

Announcing the Vanguards Add-On for Onion Services

by asn | July 20, 2018

Fixing the guard discovery problem in Tor itself is an immense project -- primarily because it involves many trade-offs between performance and scalability versus path security, which makes it very hard to pick good defaults for every onion service. Because of this, we have created an add-on that can be used in conjunction with a Tor onion service server or a Tor client that accesses Tor onion services.

  • 45 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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