Anonymous remailers and "trusted" systems

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Here's a recent use of an anonymous remaier from comp.risks:
From: Frank Andrew Stevenson
Subject: CSS broken

Monday sourcecode for the CSS algorithm was released through an anonymous remailer. CSS is the encryption algorithm used on DVD movies, and it was suspected that it was weak beyond just having a 40 bit key. Yesterday I found it to be vulnerable to a trivial 2^16 attack with as little as 6 bytes of known plaintext.

I posted the details on:

-- Joshua Tauber, November 4, 1999