Free utility that detects and removes adware, hijackers, toolbars, and PUPs from your browser.
Portable and free tool that allows diagnosing and resolving issues in Windows systems caused by malware or other failures.

Software that offers comprehensive protection from online threats.
Eliminate trojans and keyloggers from your system.

Protect your computer from possible threats from USB devices.
Microsoft's free antivirus aimed at both beginner and advanced users.