A new worm that was unleashed over the weekend affects only a limited group of Windows users and has not wreaked any widespread havoc, according to Trend Micro.

As of Monday morning on the West Coast, the original Zotob.A had infected about 50 computers worldwide, and the first variant, Zotob.B, had compromised about 1,000 systems, the antivirus software maker said.

“There are not that many infections,” said David Perry, director of global education at Trend Micro.

The worm, which has spawned at least two variants, exploits a hole in the plug-and-play feature in the Windows operating system. It surfaced only days after Microsoft offered a fix for the “critical” bug as part of its monthly patching cycle.

=> click here for more info