New Sober worm moving fast

Tuesday, 22 February 2005, 3:38 PM EST

A new version of the Sober worm wriggled out of its hole early on Monday and set about quickly attacking computers in Europe and the U.S., a security services company said. The worm is a mass-mailer, meaning it spreads itself via e-mail using contacts listed in the address books of computers it infects.

The first instance of the worm, called W32.Sober-K-mm, was intercepted by U.K. security company MessageLabs at 05:01 a.m. GMT. The company detected 663 instances of the worm in the first hour, and the figure climbed quickly to more than 2,200 instances between 11 a.m. and noon GMT, prompting MessageLabs to give it a high-risk rating, said Maksym Schipka, a senior antivirus researcher with the company.

By James Niccolai at InfoWorld.

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