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Introducing Proof-of-Work Defense for Onion Services

by pavel | August 23, 2023

Today, we are officially introducing a proof-of-work (PoW) defense for onion services designed to prioritize verified network traffic as a deterrent against denial of service (DoS) attacks with the release of Tor 0.4.8.

  • network
  • onion services
  • releases
  • usability

New Alpha Release: Tor Browser 13.0a2 (Android, Windows, macOS, Linux)

by richard | August 12, 2023

Tor Browser 13.0a2 is now available from the Tor Browser download page and also from our distribution directory.

  • applications
  • releases

New Release: Tor Browser 12.5.2

by richard | August 2, 2023

Tor Browser 12.5.2 is now available from the Tor Browser download page and also from our distribution directory.

  • applications
  • releases

Arti 1.1.7 is released: incremental improvements, numerous bugfixes

by nickm | August 1, 2023

Arti 1.1.7 is released and ready for download.

  • announcements

New Alpha Release: Tor Browser 13.0a1 (Windows, macOS, Linux)

by richard | July 26, 2023

Tor Browser 13.0a1 is now available from the Tor Browser download page and also from our distribution directory.

  • applications
  • releases

New Release: Tor Browser 12.5.1

by richard | July 4, 2023

Tor Browser 12.5.1 is now available from the Tor Browser download page and also from our distribution directory.

  • applications
  • releases

Arti 1.1.6 is released: Now you can connect* to Onion Services!

by nickm | June 30, 2023

Arti 1.1.6 is released and ready for download.

  • announcements

New release: Tor Browser 12.5

by duncan | June 22, 2023

Tor Browser 12.5 is now available, featuring an updated circuit display, new icons for onion sites, improvements to the connection experience, better accessibility, Finnish language support and more.

  • applications
  • releases

New Release: Tails 5.14

by tails | June 13, 2023

It's a major version with a new backup feature in Tails Installer, automatic upgrade of the Persistent Storage to LUKS2, and captive portal detection.

  • partners
  • releases

New Alpha Release: Tor Browser 12.5a7 (Android, Windows, macOS, Linux)

by richard | June 9, 2023

Tor Browser 12.5a7 is now available from the Tor Browser download page and also from our distribution directory.

  • applications
  • releases
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Recent Updates

Counter Galois Onion: Improved encryption for Tor circuit traffic

by nickm | November 24, 2025

Tor is upgrading its relay encryption algorithm for improved security. In upcoming releases, Arti and Tor will both support a new encryption algorithm called Counter Galois Onion (CGO). CGO prevents attackers from tampering with encrypted traffic, adds forward secrecy, and brings Tor's encryption up to modern standards.

New Release: Tor Browser 15.0.2

by ma1 | November 19, 2025

Tor Browser 15.0.2 is now available from the Tor Browser download page and also from our distribution directory.

Mexican government partially unblocks secure internet

by Jacobo Nájera, Miguel Trujillo | November 17, 2025

Mexico blocked Tor access to government websites citing security concerns. The current administration lifted the main block earlier this year, though some sites appear to remain restricted. Ironically, the government had previously used Tor for its own anti-corruption whistleblower system while blocking citizens. This is a guest post from our friends at Global Voices.

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