Sasser Worm Slithers Through Internet

First identified over the weekend, there are now at least four variants of the malicious worm. Just as a virus that affects humans can mutate and confound medical experts, each version of Sasser — labeled A, B, C, and D — poses slightly different challenges for information technology experts.

“Sasser is a successful and widely propagating worm with a somewhat benign impact to the end user,” said Chris Rouland of Internet Security Systems. “But people should absolutely remove it.”

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