Some Facebook users reportedly suffered a deluge of pornographic and violent images earlier this week due to a hacker-spawned exploit, but the social network says it has the problem under control. The images that flooded accounts’ news feeds allegedly consisted of hardcore porn with celebrity faces pasted in, as well as disturbing images, one of which featured an abused dog. The problem continued for as long as 48 hours before Facebook got a handle on it.

In an email to CNN, a Facebook spokesman wrote “We have eliminated most of the spam caused by this attack. … We are now working to improve our systems to better defend against similar attacks in the future.”

Facebook has not identified the source of the attacks. It recommends never copying and pasting unknown code into browser bars, a practice allegedly encouraged by the hack. Facebook also recommends clicking on “report” links when you encounter something that seems fishy.

Facebook: Attack identified, most spammed porn removed [CNN]

Want more consumer news? Visit our parent organization, Consumer Reports, for the latest on scams, recalls, and other consumer issues.