Facebook's 120 million users are being targeted by a virus dubbed "Koobface" that uses the social network's messaging system to infect PCs, then tries to gather sensitive information such as credit card numbers.
According to McAfee:
Koobface spreads by sending notes to friends of someone whose PC has been infected. The messages, with subject headers like, "You look just awesome in this new movie," direct recipients to a website where they are asked to download what it claims is an update of Adobe Systems Inc's Flash player.
If they download the software, users end up with an infected computer, which then takes users to contaminated sites when they try to use search engines from Google, Yahoo, MSN and Live.com
According to an Article:
The Koobface e-mails have a subject like "You look so amazing funny on our new video," and contain a link to a YouTube-like video site that appears to contain a movie clip (see image). The video, however, doesn't play, and the website then asks the user to update his or her video software by downloading a file. It's that file that contains the malicious code.
Richard Larmer, chief executive of RLM Public Relations in New York, said he threw out his PC after it became infected by Koobface, which downloaded malicious software onto his PC. It was really bad. It destroyed my computer," he said.
Facebook has posted limited instructions about how to remove the virus on its security page: In essence, users should install one of several available anti-virus programs, and be sure to change your Facebook password here.
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