A new clickjack attack is duping Facebook users into spreading spam. On his Sophos blog, senior technology consultant Graham Cluley reports on the scam which entices FB users to click on a link purportedly showing a "shocking video" of a girl being attacked by a shark. Instead, the link leads to a FB page with malicious links that, once clicked on, signs victims up as a fan of the page, "entitling" them to spam messages from the site, as well as spreading the message to all their FB friends. – GM