Tor anonymity can be compromised
p2pnet.net news:- Tor (The Onion Router) allows users to communicate anonymously online.
“Originally sponsored by the US Naval Research Laboratory, Tor became an Electronic Frontier Foundation (EFF) project in late 2004,” says the Wikipedia. “The EFF supported Tor financially until November 2005 [1], and continues to provide web hosting for the project.”
It’s widely perceived, and used, as an almost fail-safe way of surfing. But exactly how safe is it?
Under some circumstances, perhaps not all that, says a new research paper.
“We experimentally showed that after deploying a few high-bandwidth, high-uptime servers, an adversary can, with high probability, compromise the entrance and exit servers on a route for new clients,” says Low-Resource Routing Attacks Against Anonymous Systems, a University of Colorado at Boulder Technical Report, going on:
“Having compromised these two servers, we then presented and experimentally validated a new method for linking paths, thereby compromising anonymity by binding together both parties in a flow.
“In our experiments conducted on our isolated Tor deployment consisting of 60 nodes, our attack was able to correlate over 46% of circuit-building requests through the entire network. This is a significant increase over the 0.70% analytical expectation assumed by many anonymity systems analysts. We believe a key contribution of this work is our observation that , in this particular case, analytical models fail to reflect the full complexities of a real deployment.
“Tor’s analytical model predicted that a relatively low number of paths could be compromised with an attack similar to ours. However, this expectation failed to fully account for the heterogeneity in the network, and as a consequence, our attack performed far above expectations.”
Click here for the full findings.
If your Net access is blocked by government restrictions, try Psiphon from the Citizen Lab at thIs the end (of the Net) nigh?zze University of Toronto’s Munk Centre for International Studies. Go here for the official download, here for the p2pnet download, and here for details. And if you’re Chinese and you’re looking for a way to access independent Internet news sources, try Freegate, the DIT program written to help Chinese citizens circumvent web site blocking outside of China. Download it here.
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Tired of being treated like a criminal? They depend on you, not the other way around. Don’t buy their ‘product’. Do bug your local politicians. Use emails, snail-mail, phone calls, faxes, IM, stop them in the street, blog. And if you’re into organizing, organize petitions, organize demonstrations and then turn up on your local political rep’s doorstep, making sure you’ve contacted your local tv/radio station/newspaper in advance. Don’t just complain. Do something!
February 26th, 2007 at 3:50 pm
Hi! Thought you might want to know, since you blogged about us, that we have an official response at
http://blogs.law.harvard.edu/anonymous/2007/02/26/the-rumors-of-our-demise/
Thanks!
–
Shava Nerad
Executive Director
The Tor Project
http://tor.eff.org/
http://blogs.law.harvard.edu/anonymous/
February 27th, 2007 at 7:10 pm
Tor Users:
Did you know Tor was openly created by the NSA (and promoted by the EFF)?
Did you know Tor is NSA spyware, created by spooks, just like Freenet?
Did you know there are spooks all over the web spying on you?
Did you know 911 was a Bush crime family operation?
Did you know 911 was a controlled-demolition?
Wake up and research it yourself:
http://stj911.org
Dick Helms
Langley, VA
March 22nd, 2007 at 10:26 pm
Under some circumstances, perhaps not all that, says a new research paper.
March 22nd, 2007 at 10:26 pm
maidol333@hotmail.com
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