Facebook told to set up warning system after new sex scam

A major computer security firm urged Facebook yesterday to set up an early-warning system after hundreds of thousands of users were hit by a new wave of fake sex-video attacks.

British-based virus fighter Sophos warned users of the world's biggest social networking site to be on guard against any posting entitled "distracting beach babes", which contains a movie thumbnail of a bikini-clad woman.

In a press statement, Sophos said the malicious posts appear as if they are coming from Facebook users' friends, but it urged recipients not to click on the thumbnail.

By clicking on it, users are taken to a rogue Facebook application informing them that they do not have the right player software installed, Sophos said. It tricks users into installing adware, a software package that automatically plays, displays or downloads advertisements to their computer, and the video link is spread further across the network.

Sophos said that "hundreds of thousands" of Facebook users were believed to have received the posts over the past weekend.