Windows Defender for Windows 7

Best Free Antivirus Windows Defender for Windows 7
Windows Defender is an application that helps detect and eliminate these threats from your computer, protecting your computer from pop-ups, slow performance and security threats caused by spyware and other malware.

Windows Defender has real-time protection. A surveillance system that recommends measures against spyware
Minimizes obstacles when detected and helps you stay productive.

Key benefits of Windows Defender include:

Detect and remove spyware
Improved security when browsing the Internet
Protection against the latest threats.
Windows Defender is enhanced by SpyNet. A community that gathers Windows Defender users to identify and share information about spyware. The community has alerted SpyNet servers to potential threats identified by agents of the Windows Defender real-time system, which in turn catalogues and updates the system to protect it from new spyware threats.