Locations

United States Change All Microsoft Sites

Search

Microsoft Security

Worldwide Security Sites

Home Security Updates Products & Scans Computer Security Security Centers

Learn More

Security update bulletin Bulletin archives Security updates FAQ

Products

Get Windows 7 Get Microsoft Security Essentials Get Malicious Software Removal Tool Get Internet Explorer 8 Run remote scan on another computer

Security in Windows 7 Help protect your PC with Microsoft Security Essentials Security in Internet Explorer 8 SmartScreen Filter in Internet Explorer 8 Security in Internet Explorer 7 Security in Windows Vista

Security in Office 2007 Security in Outlook 2003 SP2 Security in Office 2003

Malicious Software Removal Tool

4 steps to protect your computer

Firewalls

What is a firewall How to choose a firewall

Firewalls in versions of Windows

Firewalls FAQ

Updates

Get automatic updates Windows Update overview Microsoft Update overview

Check your version of Windows Get Windows XP SP3

Security updates FAQ Windows Update FAQ

What to do about the ATL security vulnerability

Viruses

What is a computer virus Computer virus symptoms Help prevent computer viruses Remove a computer virus

Help prevent rogue security software Help prevent IM viruses

Virus protection in versions of Windows Bluetooth

Worms

What is a computer worm How to prevent computer worms Help prevent the Conficker worm How to remove computer worms

Spyware

What is spyware Spyware symptoms How to prevent spyware How to remove spyware

Spyware protection in versions of Windows

Security Response

Security Engineering

Malware Protection

Worldwide Computer Security Information

Use the menu below to find computer security information in your language.

Was This Information Useful?