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Netsky, Bagle Worm Variants Wave Hits; Stretches Security

A wave of worms that started Friday, gained speed over the weekend, and broke ashore on Monday sent security firms flooding customers with alerts and has corporate users scrambling to update their virus definitions.

As of mid-morning Monday, six new variations of the Bagle worm have been spotted -- Bagle.c, Bagle.d., Bagle.e, Bagle.f., Bagle.g, and Bagle.h -- as well as two new version of the pesky Netsky worm, Netsky.d and Netsky.e.

"This is just an unprecedented number of variations," said Vincent Gullotto, vice president of McAfee's AVERT team, the company's virus research arm.

"We've released more emergency alerts to our customers in the first eight weeks of this year than in all of 2003, and I don't see any signs of it slowing."

Ken Dunham, the director of malicious code research at iDefense, seconded the notion. "It's like a tsunami, with all the variants crashing down at once," he said.

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