Facebook warns of wave of spam

A recent wave of spam flooding Facebook users' pages with graphic pictures depicting sex and violence has mostly been stopped, but the social networking site said Wednesday that people need to remain vigilant to keep their accounts from being hijacked.

Facebook in Germany said the latest attack tricked users into pasting and executing malicious JavaScript in their browser URL bar, exploiting a browser vulnerability that caused them to unknowingly share the content, according to a statement to news agency dapd.

"Our team responded quickly and we have eliminated most of the spam caused by this attack," the statement said. "We are now working to improve our systems to better defend against similar attacks in the future."

According to Facebook, no user data or accounts were compromised during the attack.