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Henry Stern writes: > Henry Stern, Justin Mason and Michael Shepherd. A linguistics-based > attack on personalised statistical e-mail classifiers. > > Abstract: > We present a potential vulnerability of personalised anti-spam filters > where an attacker sends carefully constructed e-mail messages with the > goal of negatively a ecting classi er accuracy. Words from the core of > the English language are randomly "injected" into spam e-mails for the > express purpose of manipulating the probability tables of a naive > Bayesian classifier. This attack method is shown to be successful in > reducing classifier accuracy within a laboratory environment. Barriers > to a real-world implementation and potential countermeasures are discussed. 'a ecting classi er accuracy'?! back to the drawing board, lads! ;) (that's "affecting classifier accuracy", obviously.) - --j. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Exmh CVS iD8DBQFAtiuuQTcbUG5Y7woRAjGIAJ9aiAD7epDd5iQ8hQsjqvDjSadWcgCeO4TA v0dQKs1ezRsY2FPdZJGclHU= =wNw0 -----END PGP SIGNATURE-----
