Wednesday, April 13, 2011

Not anonymous: attack reveals BitTorrent users on Tor network

Not anonymous: attack reveals BitTorrent users on Tor network

In a paper released a few weeks ago at the USENIX conference's workshop on Large-scale Exploits and Emergent Threats (LEET), researchers from INRIA France revealed a class of vulnerabilities in the Tor system which threatens the anonymity of many BitTorrent users. The research team, led by Stevens Le Blond, explained an attack methodology which it developed and deployed. The attack exploits a feature of Tor originally introduced to improve anonymity and efficiency, but it also relies on certain aspects of the BitTorrent protocol.