Protect your computer:Beyond the basics

Viruses

Get a free PC safety scan Windows Live OneCare safety scanner is a free service designed to help ensure the health of your PC. Malicious Software Removal Tool Download this free tool that checks computers running Windows Vista, Windows XP, Windows 2000, and Windows Server 2003. What is a computer worm? They copy themselves without any action from you, and spread quickly, wreaking havoc on networks and contacts lists. How to help prevent computer worms 5 tips on how to prevent infection. How to remove a computer worm Find out how to use recovery tools to help remove unwanted software. Protect yourself from the Conficker computer worm See details about Conficker, and how to use the Microsoft Malware Protection Center to keep informed about other worms or issues. What is a computer virus? Diminish the impact of computer viruses with a little knowledge and prevention. Signs of viruses: Are you infected? If something about your computer just isn't quite right, it might mean your computer is infected with a virus. How to help prevent computer viruses 5 tips on how to prevent infection. How to remove a computer virus Find out how to use antivirus tools to help remove and prevent unwanted software. Watch out for fake alerts Rogue security software might infect your machine with a virus. Help avoid computer viruses that spread through e-mail Learn how to manage e-mail attachments in Outlook and Outlook Express to help prevent the spread of viruses. Help avoid computer viruses that spread over mobile devices Protect yourself when you use Smartphones, cell phones, handheld PCs, and other portable technology. 5 steps to help avoid instant message viruses Watch out for files sent in IM. They could be viruses in disguise. How Trojans can take over your computer, and how to prevent them Protect your computer from malicious programs that criminals can use to control your computer through your Internet connection. Don't let your computer become a zombie When online criminals take control of many computers at once, the resulting "botnets" can wreak havoc on the Internet. Video: Defend against viruses and worms Watch this video to find out how viruses and worms can infect your computer. Learn about the three main ways you can help to protect yourself from computer viruses. Learn more about virus protection for your operating system Find information specific to the version of Windows on your computer.