coondoggie writes "Can Internet worms be thwarted within minutes of their infection? Researchers at Ohio State University believe they can. The key, researchers found, is for software to monitor the number of scans that machines on a network send out. When a machine starts sending out too many scans — a sign that it has been infected — administrators should take it off line and check it for viruses. In a nutshell, the researchers developed a model that calculated the probability that a virus would spread, depending on the maximum number of scans allowed before a machine was taken off line.'The difficulty was figuring out how many scans were too many,' researchers said."
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