Facebook users should be wary about the lastest version of the nefarious Koobface worm, which is spreading widely across the popular social network, says antivirus firm Eset:
http://www.eset.com/blog/2010/04/07/massive-new-koobface-campaignThe worm arrives in the form of a message from a friend claiming to show erotic encounters captured by a hidden camera. You'll be asked to download a special video player to view the video. Don't do it. You'll trigger an automated program that will send copies of the same viral message to all of your friends, while turning full control of your PC over to the attackers.
You will subsequently receive promotions to buy worthless antivirus protection and have the logons to all of your online accounts systematically stolen. Your machine will remain under the control of hackers, who can use it to spread spam. Or if you're using a work PC, they very likely will use your machine to begin probing other PCs on your company's network, as we described in this front page cover story:
http://www.usatoday.com/tech/news/computersecurity/2010-03-04-1Anetsecurity04_CV_N.htm"Don't trust any messages of this type that turn up in social network messaging services," says Eset researcher David Harley. "Be on the lookout for deceptive social engineering and keep your antivirus software properly updated."
(USA Today)