If networks simply took responsibility for the traffic that comes from them, this problem wouldn't exist. It's completely trivial to find infected hosts on a network through passive monitoring. They should then be disconnected until they are properly cleaned and secured.
This is a whole new play ground for organised crime, mostly thanks to Microsoft. You've got millions of PC's around the world that are largely, in one way or another, susceptible to computer virii, making them open targets for use as minions. And the perfect seed for spreading them is the databases of email addresses used by spammers...
Paul Schmehl (pauls@xxxxxxxxxxxx) Adjunct Information Security Officer The University of Texas at Dallas AVIEN Founding Member http://www.utdallas.edu/ir/security/
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