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Advisory: remote DoS when using Tor with recent OpenSSL versions built with the "no-ssl3" option

by phoul | October 20, 2014

This is a copy of the message Nick Mathewson sent to the tor-talk &

New SSLv3 attack found: Disable SSLv3 in TorBrowser

by nickm | October 14, 2014

Hi! It's a new month, so that means there's a new attack on TLS.

  • 17 comments

What the "Spoiled Onions" paper means for Tor users

by phw | January 23, 2014

Together with Stefan, I recently published the paper "Spoiled Onions: Exposing Malicious Tor Exit Relays".

  • 37 comments

Tor and the BEAST SSL attack

by nickm | September 23, 2011

Today, Juliano Rizzo and Thai Duong presented a new attack on TLS <= 1.0 at the Ekoparty security conference in Buenos Aires.

  • 36 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

Upcoming Events

February 23, 2019
Tor Meetup (Lisbon)
March 23, 2019 - March 24, 2019
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March 24, 2019 - March 27, 2019
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April 01, 2019 - April 05, 2019
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Recent Updates

New Release: Tor Browser 8.5a8

by boklm | February 15, 2019

Tor Browser 8.5a8 is now available from the Tor Browser Project page and also from our

New Release: Tor Browser 8.0.6

by boklm | February 12, 2019

Tor Browser 8.0.6 is now available from the Tor Browser Project page and also from our

Expect More From Tor in 2019

by steph | January 30, 2019

The Tor Project achieved a lot in the last year. We spent 2018 fighting for the fundamental human rights to privacy and freedom online and made our software more accessible than ever before.

New Release: Tor Browser 8.5a7

by boklm | January 30, 2019

Tor Browser 8.5a7 is now available from the Tor Browser Project page and also from our

© 2019 The Tor Project

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