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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.

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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.

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New Tor Denial of Service Attacks and Defenses

by robgjansen | January 24, 2014

New work on denial of service in Tor will be presented at NDSS '14 on Tuesday, February 25th, 2014:

  • 19 comments

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Recent Updates

New Release: Tor Browser 10.0.13 (Linux Only)

by sysrqb | March 03, 2021

Tor Browser 10.0.13 for Linux is now available from the Tor Browser download page and also from our

New Release: OnionShare 2.3

by micah | February 25, 2021

This post was originally published on Micah Lee's blog.

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

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