Facebook users on Tuesday were assaulted by a wave of pornographic and violent images, pushed into their accounts as content supposedly liked or recommended by their friends.
The images included doctored photos of pop singer Justin Bieber and other celebrities in demeaning poses. Other images depicted extreme violence and abused animals.
Facebook members complained and described the images in Twitter posts all morning. By midafternoon Eastern time, Facebook indicated it had the attack under control.
“We experienced a coordinated spam attack that exploited a browser vulnerability,” says Facebook spokesman Andrew Noyes. “Our efforts have drastically limited the damage caused by this attack, and we are now in the process of investigating to identify those responsible.”
Noyes says Facebook users were “tricked into pasting and executing malicious Javascript in their browser URL bar, causing them to unknowingly share this offensive content.”
Such attacks use Facebook systems to rapidly push malicious content all across the social network, says Mike Geide, senior researcher at security firm Zscaler. Similar trickery occurred when Osama bin Laden was killed: Hackers distributed messages to Facebook members luring them to cut and paste coding into their browser address bar to see a video of bin Laden’s body.
The bad guys in that case tapped into Facebook’s systems to push spam advertisements virally to the victims’ friends and friends of friends. The spammers got paid every time someone clicked on the ad.
The Brandt Standard 
Is this happening again for anyone else (march 2012?) I never saw it the first time round but today have seen a whoel bunch of nasty stuff being posted to peoples walls.
Posted by Aaron Kelly | March 8, 2012, 2:48 AM