De-anonymizing BitTorrent Users on Tor

Some BitTorrent users are running BitTorrent on top of Tor to preserve their privacy. In this extended abstract, we discuss three different attacks to reveal the IP address of BitTorrent users on top of Tor. In addition, we exploit the multiplexing of streams from different applications into the same circuit to link non-BitTorrent applications to revealed IP addresses.Comment: Poster accepted at the 7th USENIX Symposium on Network Design and Implementation (NSDI '10), San Jose, CA : United States (2010