A worm found spreading via America Online's Instant Messenger is carrying a nastier punch than usual, a security company has warned.
The unnamed worm delivers a cocktail of unwanted software, including a so-called rootkit, security experts at FaceTime Communications said Friday. A rootkit is a tool designed to go undetected by the security software used to lock down control of a computer after an initial hack.
"A very nasty bundle is downloaded to your machine" when you click on the worm link, said Tyler Wells, senior director of engineering at FaceTime. "This is the first time that we have seen a rootkit as part of the bundle of applications that is sent to your machine. It is a disturbing trend."
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