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Re: The use of malicious botnets to disrupt The Onion Router
Is there anyone who could give a (somewhat professional) assessment of
how a web-of-trust feature would impact on anonymity? How about tor's
George Danezis has looked at using sparse expander graphs for mix
networks : each node has a small number of neighbours but can reach
any other node in a small number of hops, so if the circuit is long
enough the entry node can't narrow down the list of possible exit nodes
or vice versa. Unlike Tor, the small number of neighbours per node makes
it possible to provide cover traffic.
It's not clear whether social networks are good expanders , but
Shishir Nagaraja has looked at using social networks for mix networks
; the LiveJournal social network appears to be suitable, although you
have to use more cover traffic than you would in an ideal expander graph.