Facebook Porn Virus Spreading

Attack has users finding their social network filled with disturbing images.
2:24 | 11/16/11

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Transcript for Facebook Porn Virus Spreading
The massive spam attack flooding FaceBook users millions of people finding their social network filled with disturbing pictures. And the hunt is on for who was behind -- hack attack ABC's John Berman has much more. On this -- outrage at silicon good morning -- -- pretty disgusting stuff. FaceBook says it's investigating a kind of cyber attack one it's flooding user accounts and images that are graphic. And revolting and they want your help to stop it. Images are shocking raw porn. Sickening wounded animals. Startling. A photo -- image of Justin Bieber the pictures have been popping up in FaceBook news feeds maybe thousands in the last few days. It -- count that FaceBook user Courtney Zito who wrote on Twitter. It looks like I'm boycotting FaceBook till they get this hacking -- -- The images I have seen today were enough to meet -- ill. FaceBook tells ABC news we experienced a coordinated spam attack -- exploited a browser vulnerability. How was it happening the way it starts it's somebody -- grabs a link or -- on the link. In the -- or some or something connected to FaceBook would sort of launches it and you don't have to be the one to do it. If a friend cuts in case it could show up on your page they're not trying to do identity theft and maybe get the credit card and -- or even make money they're trying to disrupt the. The service and really shake people's trust and FaceBook so who was behind it. -- suspect -- hacking group anonymous. Upset about FaceBook privacy settings they posted this video this past summer. Threatening to attend FaceBook this month. November 5 with 2011. Wheeler and on -- but we are legion we do not forgive we do not forget its. FaceBook says they're trying to figure out who's responsible. In working to contain the damage. Now FaceBook asked us to pass on these tips to stop attacks like this one. Never copy and paste an unknown -- -- into your Internet browser even if you're promised gifts. Our free stuff that's what might be happening here and to always make sure you -- up to date browser there -- security settings that help. -- three make -- -- report suspicious behavior or links to FaceBook so they can work to stop this but things to keep in mind. All right John thank you.

This transcript has been automatically generated and may not be 100% accurate.

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