On 04/04/2010 01:49 PM, Matt McCutchen:
Which is simply another user input (modifiable by the user).
That's irrelevant.  The Referer is an effective XSRF defense because a
malicious site cannot spoof a Launchpad referrer when sending a request
to Launchpad.

Huuu? And why not?

See this article, section 4.2, conclusion #1:

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.140.2584&rep=rep1&type=pdf

Where exactly? I haven't see that this information is not subject to user modification.

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Signer:  Eddy Nigg, StartCom Ltd.
XMPP:    start...@startcom.org
Blog:    http://blog.startcom.org/
Twitter: http://twitter.com/eddy_nigg

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