The popular social networking website Twitter has fallen victim to an exploit that enables attackers to insert pop-up ads and open unwanted websites on a user's browser. As reported on Graham Cluley's blog, the exploit is apparently merely being used mischievously at this point, but points the way to cybercriminals using the flaw to redirect users to websites loaded with malware in addition to spam ad pop-ups. Cluley says Twitter is aware of the exploit and intends to soon issue a patch. – GM