It then becomes a bigger incentive on the ISPs to start detecting and
blocking malicious machines.
Consider that ISPs have only shown limited willingness to do so in the
past - for example when the compromised systems have been used to send
out worms, instead of spam.
It might help if the ISPs were legally required to block compromised
machines, but whether that is practical or feasible is a different
issue.
--
Fridrik Skulason Frisk Software International phone: +354-540-7400
Author of F-PROT E-mail: frisk(_at_)f-prot(_dot_)com fax:
+354-540-7401
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