Social network users are alerted to Koobface worm

Facebook, MySpace and Bebo users are being warned about the resurgence of a virus-like worm called Koobface that will try to infect their PCs and seek credit card details. Koobface spreads by sending messages to users of social networking sites such as "Are you sure this is your first acting experience?", "is it u there?", "impressive. i'm sure it's you on this video" and offering a web link. When users click on the link it says they need to download new software to see the video and clicking on this downloads the worm. Apple and Linux systems are unaffected.
Charles Arthur, in the Guardian, 10 December 2008