The news feeds of thousands of Facebook users were flooded with violent and pornographic photographs after an attack by hackers, a spokewoman for the social networking site confirmed.
Thousands of users around the world were confronted with the videos and images – some of which were doctored to show pornographic pictures of celebrities including teen star Justin Bieber.
"This seems to be a purely malicious act," said security company Sophos. "Facebook has a reputation for maintaining a reasonably family friendly environment and most Facebook users don't expect dead dogs and penises showing up on their wall."
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