Full Disclosure mailing list archives
Re: Is there a way to trace back Tor user
From: Bruno Wolff III <bruno () wolff to>
Date: Fri, 16 Jun 2006 14:14:43 -0500
On Thu, Jun 15, 2006 at 09:33:12 -0400, Brendan Dolan-Gavitt <mooyix () gmail com> wrote:
This is covered in the Tor FAQ: http://wiki.noreply.org/noreply/TheOnionRouter/TorFAQ#head-a79d22244cc04ca5472832cbcc315198b875f34c The best attack that I know of right know involves measuring latency to each Tor node and correlating that with transmissions at the destination server. The latency goes up on those nodes carrying the traffic to the destination server when that server is transmitting data, allowing the attacker to determine the path through Tor (though not the original source of the traffic). See "Low-Cost Traffic Analysis of Tor" for more details:
There can be other attacks in special cases. Tor users are rare and if you know some other information about them (like that they are a user on your network) then it might not be too hard to figure out who they are. I used this idea a long time ago to figure out who sent an anonymous threat to one of our users through anon.penet.fi remailer. They were the only user on our system to have sent email to that remailer at a time close to when the threat message was received. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Is there a way to trace back Tor user Jianqiang Xin (Jun 12)
- RE: Is there a way to trace back Tor user CIRT.DK Mailinglists (Jun 12)
- Re: Is there a way to trace back Tor user poo (Jun 12)
- Re: Is there a way to trace back Tor user Brendan Dolan-Gavitt (Jun 15)
- Re: Is there a way to trace back Tor user Bruno Wolff III (Jun 16)
- Re: Is there a way to trace back Tor user Brendan Dolan-Gavitt (Jun 19)
- Re: Is there a way to trace back Tor user Bruno Wolff III (Jun 16)
- RE: Is there a way to trace back Tor user CIRT.DK Mailinglists (Jun 12)