Some have blamed the hacktivist group Anonymous, which was rumored to be planning to take down the social network on November 5, for this attack. Three months ago, the larger collective group made a point to say it did not support such a takedown operation and in the end it did not take place: the service has remained operational all month.
Facebook is still up and running, but it has been exploited in a coordinated way. There is no proof that Anonymous is behind this flood of inappropriate images and links (normally such an attack would result in confirmation from Anonymous, in some shape or form), but it only takes a few members or ex-members to pull something like this off.
Facebook says it is aware of users reporting a huge flood of unwanted content. This includes links, videos, and images depicting pornography, acts of violence, self-mutilation, and bestiality.
Facebook has revealed the huge flood of links, videos, and images depicting pornography, acts of violence, self-mutilation, and bestiality, on the site is the result of a coordinated spam attack.

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