bugtraq - Re: a method for bypassing cookie restrictions in web browsers

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Message-ID: <5.1.0.14.2.20040120112329.00b2fd70@hesiod>
Date: Tue, 20 Jan 2004 11:34:09 -0500
From: Kevin Fu <nospam-google-me@....EDU>
To: Michal Zalewski <lcamtuf@...ttot.org>
Cc: vuln-dev@...urityfocus.com, bugtraq@...urityfocus.com
Subject: Re: a method for bypassing cookie restrictions in web browsers

Felten and Schneider showed how to determine whether a user had
visited a given site by using web caching and timing measurements.
Although it was probabilistic, the attack allowed a third party to determine
whether a user had visited a given web site.

http://citeseer.nj.nec.com/felten00timing.html

-Kevin Fu

 >This does appear to be a known way of tracking web users without
 >using cookies:
 >http://sourcefrog.net/projects/meantime/
 >
 >>
 >> Any thoughts? Is the technique something new?