This free privacy tool scans your memory and your drives for tracking, data-mining and advertising components.

This free antiviral program provides all that you need to protect your computer, including a tool for scanning your hard drive and a real-time shield (the AVG Resident Shield) to prevent infections

This freeware includes three famous malware removal tools : Microsoft Malicious Software Removal Tool, McAfee AVERT Stinger and Trend Micro Damage Cleanup Engine.

This free software inspects all incoming messages on your e-mail client and filters the spams.

The free version of this personal firewall prevents hackers and virus to take control of your PC using the security flaws of Windows.

There is no need to pay a monthly fee to an antivirus editor to protect your PC efficiently.