[tor-bugs] #5459 [Torflow]: Exit scanner should scan for Guard <-> Exit reachability
Tor Bug Tracker & Wiki
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Tue Apr 3 22:48:02 UTC 2012
#5459: Exit scanner should scan for Guard <-> Exit reachability
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Reporter: mikeperry | Owner: aagbsn
Type: defect | Status: assigned
Priority: major | Milestone:
Component: Torflow | Version:
Keywords: | Parent: #5456
Points: | Actualpoints:
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Comment(by arma):
Replying to [comment:4 reganeet]:
> 2. I don't know much about "tagging and path bias attackers" and how
this test should work. How should I figure it out?
http://freehaven.net/anonbib/#ccs07-doa is the original paper on the
topic.
The very short version of the issue is that an adversary who runs some
relays can try to fail circuits that a) use one or more of his relays but
b) he can't do traffic analysis on because his relays aren't in the right
positions in the circuit to win. That will cause the user to make a new
circuit, giving the attacker more chances at winning.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5459#comment:5>
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