Re: [tor-dev] moved from [Tor-censorship-events] Improving the censorship event detector.

2015-08-20 Thread George Danezis
Hi all, For all my sins I wrote parts of the algorithm that is at fault here. I also echo, and confirm all the problems mentioned. One thing that would greatly help tune such systems is a database of known censored periods from different jurisdictions. The issue is that "anomalies" occur all the

Re: [tor-dev] Researching Tor: Quantifying anonymity against a global passive adversary

2015-06-03 Thread George Danezis
/ node on which the circuit operates, reveals this ID. Then you can use techniques such a monte-carlo simulation to evaluate the probability say Alice is talking to Bob as described in this paper: The Bayesian Traffic Analysis of Mix networks. Carmela Troncoso and George Danezis. ACM CCS 2009. Also

Re: [tor-dev] GSoC project idea: pluggable transport that hides data in TCP SEQ numbers / UDP SRC ports

2014-01-07 Thread George Danezis
Hello Jacek and all, Before, going down this path I would recommend reading the very relevant works: *Embedding Covert Channels into TCP/IP* *Steven J. Murdoch, Stephen Lewis * It is commonly believed that steganography within TCP/IP is easily achieved by embedd