Found this interesting article I though you might be interested in.

Computer viruses and worms live in the fast lane, propagating themselves through a network faster than even the most highly caffeinated techie can purge them from a system.

But Matthew Williamson, a researcher at the Hewlett-Packard laboratories in Bristol, England, has come up with a new way to handle the quick-moving cybercritters: Throttle 'em.

Computers contaminated by a virus behave differently from uninfected computers. An infected computer's primary goal in life is to reproduce the virus it harbors. In order to do that, the infected computer will try to make connections –- through e-mail or directly -- with as many other computers as possible, as quickly as possible.

Williamson's idea hinges around slowing viral spread by limiting a computer's ability to connect to new computers.
Story is here: http://www.wired.com/news/infostruct...,56753,00.html