Microsoft Security Essentials provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software.

The Microsoft Baseline Security Analyzer provides a streamlined method to identify missing security updates and common security misconfigurations. MBSA 2.2 is a minor upgrade to correct minor issues and add optional catalog support.

...Solution Accelerator provides centralized security baseline management features, a baseline...portfolio, customization capabilities, and security baseline export flexibility to accelerate...s ability to efficiently manage the security and compliance process for the most widely...

A security issue has been identified in a Microsoft software product that could affect your system.

The Microsoft Security Essentials Prerelease program allows users to run the latest & greatest versions of Security Essentials before they are publicy available

This update addresses the vulnerability discussed in Microsoft Security Bulletin MS12-071. To find out if other security updates are available for you, see the Additional Information section at the bottom of this page.

A security issue has been identified that could allow an attacker to remotely compromise your Windows-based system using the Windows Media Player Plug-in and gain control over it.

A security issue has been identified in a Microsoft software product that could affect your system.

This update addresses the vulnerability discussed in Microsoft Security Bulletin MS13-021. To find out if other security updates are available for you, see the Additional Information section at the bottom of this page.