December Update for Windows Malicious Software Removal Tool Released

Yesterday we released this month’s update of the Windows Malicious Software Removal Tool. This update includes three new malware families: F4IRootkit, Ryknos, and IRCBot. This tool now cleans over 50 of the most prevalent malware families. This release, as in the past, is available as an interactive web-based cleaner, as a downloadable executable, as well…

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Windows OneCare Live Beta Available!

On Tuesday, the Windows OneCare team announced the availability of the beta of Windows OneCare Live – a comprehensive PC health service for consumers, which offers an integrated approach to help consumers more easily protect and care for their computers. The Windows OneCare team is a very important partner team of ours, and we are extremely…

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Anti-Malware White Papers Posted

Hi, Matthew Braverman here again. In early October, members of Microsoft’s anti-malware team attended the 2005 Virus Bulletin Conference in Dublin, Ireland. This is one of the top three annual antivirus industry conferences, and was an excellent opportunity to mix and mingle with some of the leading members of the anti-malware industry and community. While…

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Extending the expiration date for Windows AntiSpyware Beta 1

Hi, I’m Sterling Reasor, a program manager for the current Windows AntiSpyware beta and forth-coming Windows Defender. A few days ago we posted an update to the Windows AntiSpyware beta and yesterday, we turned on the auto-updater code to automatically update existing users to this updated beta. For the techies, this update is build 1.0.701. Before you…

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Sony rootkit signatures now available

Hi, we are Eric Allred and Ziv Mador, response coordinators for the anti-malware technology team. We have analyzed several versions of the rootkit that have been shipped as part of Sony’s XCP software. We are calling the family WinNT/F4IRootkit.  We chose the name based on the company that authored this component. We have added detection…

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Sony DRM Rootkit

I’ve been getting a lot of questions in the last week about Microsoft’s position on the Sony DRM and rootkit discussions, so I thought I’d share a little info on what we’re doing here. We are concerned about any malware and its impact on our customers’ machines. Rootkits have a clearly negative impact on not…

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What’s in a name?? A lot!! Announcing Windows Defender!

Every week seems like a big week for us in the engineering team working on our anti-malware technology. However, last week was especially important in a sentimental way. We got the final name for the cool technology our team has been developing for Windows. The name, after long consideration by our product marketing and branding…

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Introducing the Windows Live Safety Center (Beta)

Hi all, my name is Matthew Braverman and I’m a program manager on the anti-malware technology team at Microsoft. On Tuesday, Bill Gates and Ray Ozzie introduced the new Windows Live and Office Live services. One of the highlights of this launch was the introduction of the Windows Live Safety Center (Beta). The Safety Center…

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Welcome to the Anti-Malware Engineering Team’s Blog!

Welcome! This is the team blog for the Anti-Malware product team. We’re the team responsible for building Microsoft’s antivirus and anti-spyware technology (along with anti-rootkit, anti-bot, and other stuff). We setup this blog some time back, but have all been pretty heads down on building our technology so it can get out and help customers,…

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