If you've been seeing a large number of violent and graphic images popping up on Facebook recently, you're not alone. You're the latest victim of a massive attack on the social networking giant.

Within the last 24 to 48 hours, a large number of explicit and violent images have started appearing on Facebook users' pages without their consent. According to Facebook, these images are the result of a coordinated spam attack that exploits a vulnerable spot in the browser and tricks users into pasting malicious JavaScript into their browsers. This is not the first time such an attack has been launched against the site, but it is one of the largest attack to date. Several angry users have threatened to close their accounts permanently because of the attacks, and the company said that are not sure how many of Facebook's 800 million users have been affected by the attack.

At the time of writing this story, my Facebook page appears to be unaffected by the attack, but judging by some recent posts,  I suspect some of my friends may have been affected. If you think your Facebook page has been affected, you can follow these steps to try and clean up your account.