From Facebook, by Jeff Williams, Microsoft

When the Koobface worm hit Facebook users last year, the company’s security team scrambled to help affected users reset their accounts and avoid new infections. But the worm has continued to crop up periodically since then, and so the anti-malware team at Microsoft has been helping the Facebook technicians get a handle on the attack.

In a post on the Facebook blog, Microsoft’s Jeff Williams writes:

In working with Facebook, we were able to add detection of Koobface to our Malicious Software Removal Tool (MSRT), which checks computers running Windows software to detect and remove viruses. By adding this threat to the more than 100 threat families already in MSRT, we’re helping to protect hundreds of millions of people. Since releasing our newest version of MSRT two weeks ago, we’ve removed Koobface nearly 200,000 times from over 133,677 computers in more than 140 different locales around the world.

Categories: Malware, Web Security