Microsoft Security Essential

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software for Free.  Microsoft Security Essentials Protects you from all the latest threat.  This real-time protection inspects the network traffic and block exploitation from known network-based vulnerabilities. Microsoft Security Essentials efficiently in the background consuming less memory space.
Microsoft Security Essentials is available for Home users and small businesses with up to 10 PCs.


System Requirement :

• Windows XP (SP2 or SP3); Windows Vista (Gold, SP1, or SP2); Windows 7
•  XP - PC with a CPU clock speed of 500 MHz or higher, and 256 MB RAM or higher.
• Vista and Windows 7 - PC with a CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
• 200 MB of available hard disk space.