http://tttyx2vwp7ihml3vkhywwcizv6nbwrikpgeciy3qrow7l7muak2pnhad.onion/Publications.html
The analysis
is presented in a black-box model of anonymous communication that
abstracts the essential properties of onion routing in the presence
of an active adversary that controls a portion of the network and
knows all a priori distributions on user choices of destination. Our
results quantify how much the adversary can gain in identifying
users by exploiting knowledge of their probabilistic behavior.