Back in October 2011, we began to remove Eyestye variants using the Malicious Software Removal Tool (MSRT) in an effort to prevent the proliferation of this botnet. Today, we published a detailed MMPC Threat Report on this family. The report provides an in-depth analysis of how Win32/EyeStye works and...

We’re very excited to announce that Microsoft has teamed up with Facebook to offer Windows users free malware protection with Microsoft Security Essentials. Since May 1st, Facebook users have had the choice of downloading and installing Microsoft Security Essentials as their security solution....

Late last week, the MMPC officially launched its Facebook page and its Twitter account . From this Welcome page, you can read our latest blog posts, see our latest Twitter feeds, and find out what threats most affect your desktop. You can also download the latest Security Intelligence Report...

Would you like to know more about the MMPC, and how we protect computer users worldwide? We have released new versions of two whitepapers which describe how the MMPC operates, and provide an introduction to the antimalware technologies that the MMPC supports. The two new papers are: - Malware Research...

Today, we’re releasing a Microsoft Malware Protection Center Threat Report on Qakbot as a follow-up to the recently-released Microsoft SIRv10 and our special report on Battling Botnets in late 2010.  This report focuses on one botnet in particular, Qakbot . Qakbot is a backdoor that includes user...

Just over one year ago, Microsoft- with industry and academic partners- utilized a novel combination of legal and technical actions to take control of the Win32/Waledac botnet as the first action in Project MARS (Microsoft Active Response for Security).   Today, a similar action has had its legal...

On Valentine's Day, an anonymous researcher announced a previously undisclosed SMB (Server Message Block) vulnerability affecting the CIFS (Common Internet File System) browser service. Along with the vulnerability, the researcher also posted Proof-of-Concept (PoC) exploit code showing exactly how to...