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Possible upcoming attempts to disable the Tor network

by arma | December 19, 2014

The Tor Project has learned that there may be an attempt to incapacitate our network in the next few days through the seizure of specialized servers in the network called directory authorities.

  • 350 comments

Traffic correlation using netflows

by arma | November 14, 2014

People are starting to ask us about a recent tech report from Sambuddho's group about ho

  • 86 comments

On the recent Black Hat 2014 Talk Cancellation

by phobos | July 21, 2014

As posted by Roger on the Tor-Talk mailing list:

Hi folks,

  • 61 comments

Experimental Defense for Website Traffic Fingerprinting

by mikeperry | September 04, 2011

Updated 09/05/2011: Add link to actual

  • 23 comments

"One cell is enough to break Tor's anonymity"

by arma | February 18, 2009

Tomorrow there's a talk at Black Hat DC by Xinwen Fu on an active attack that can allow traffic confirmation in Tor.

  • 25 comments

The MD5 certificate collision attack, and what it means for Tor

by nickm | December 30, 2008

Today, a team of security researchers and cryptographers gave a talk at the 25th Chaos Communication Congress (25C3), about a

  • 7 comments

Media coverage of "Covert channel vulnerabilities in anonymity systems"

by sjmurdoch | February 03, 2008

Over the past few days there has been some coverage of my PhD thesis,

  • 1 comment

Upcoming Events

April 23, 2021
Servicios Onion: "una cebolla por día mantiene a la vigilancia lejos" (Flisol Ranchero)

Onion services talk in Spanish with Rancho Electronico (Flisol 2021)

June 07, 2021 - June 11, 2021
Rightscon (with Tor panel!)
July 12, 2021 - July 16, 2021
Privacy Enhancing Technologies Symposium (PETS)
August 27, 2021
Free and Open Communications on the Internet (FOCI) workshop
See All Upcoming Events

Recent Updates

New Release: Tor Browser 10.0.16

by sysrqb | April 20, 2021

Tor Browser 10.0.16 is now available from the Tor Browser download page and also from our

New Alpha Release: Tor 0.4.6.2-alpha

by nickm | April 15, 2021

There's a new alpha release available for download. If you build Tor from source, you can download the source code for 0.4.6.2-alpha from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release likely some time next week.

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

Tor 0.4.6.2-alpha is the second alpha in its series. It fixes several small bugs in previous releases, and solves other issues that had enabled denial-of-service attacks and affected integration with other tools.

Changes in version 0.4.6.2-alpha - 2021-04-15

  • Minor features (client):
    • Clients now check whether their streams are attempting to re-enter the Tor network (i.e. to send Tor traffic over Tor), and close them preemptively if they think exit relays will refuse them for this reason. See ticket 2667 for details. Closes ticket 40271.
  • Minor features (command line):
    • Add long format name "--torrc-file" equivalent to the existing command-line option "-f". Closes ticket 40324. Patch by Daniel Pinto.

 

New Release: Tor Browser 10.5a14

by sysrqb | April 13, 2021

Tor Browser 10.5a14 is now available from the Tor Browser Alpha download page and also from our

New Release: Tor Browser 10.5a13

by sysrqb | April 05, 2021

Tor Browser 10.5a13 is now available from the Tor Browser Alpha download page and also from our

© 2021 The Tor Project

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