Microsoft

	Malicious Software Removal Tool

The Microsoft Windows Malicious Software Removal Tool checks computers running Windows XP, Windows 2000, and Windows Server 2003 for infections by specific, prevalent malicious software—including Blaster, Sasser, and Mydoom—and helps remove any infection found. When the detection and removal process is complete, the tool displays a report describing the outcome, including which, if any, malicious software was detected and removed.
Microsoft releases an updated version of this tool on the second Tuesday of each month, and as needed to respond to security incidents. The tool is available from Microsoft Update, Windows Update and the Microsoft Download Center.

	Windows Live OneCare safety scanner.

Windows Live OneCare safety scanner is an online service that lets you scan your computer to help protect, clean, and keep it running at its best. Use our free protection scan to check for and remove viruses, spyware, and other potentially unwanted software and to find vulnerabilities in your Internet connection.

Learn How to Protect Your PC
To help protect your computer against a wide variety of security threats, see Protect Your PC