Microsoft Security Essentials 4.10.0209.0

Microsoft Security Essentials software is a free antivirus program that provides real-time protection against viruses, spyware, and other malicious software. It has an easy-to-use interface that offers customizable scanning options and automatic updates for the latest virus definitions. The software also includes a system scanning tool that checks for potential vulnerabilities in the operating system and applications and provides recommendations for improving system security.