New Koobface worm lets hackers play tricks on Facebook, MySpace members

Is there a new generation of the so-called "Koobface" worm that's been plaguing social networking sites?

Apparently so. Rik Ferguson, a researcher with computer security software maker Trend Micro, earlier this week reported on the company's Web site that he had found a new variant of Koobface, which first surfaced in December, after investigating a Facebook message he received that appeared to have come from someone on his friends list and directed him to a spoofed YouTube site. The worm contacted him after stealing his pal's log-in credentials (from a cookie created by Facebook and stored on that person's computer), accessing the pal's Facebook account and sending out messages people he listed as friends.