Microsoft’s free Security Essentials antivirus software identified 98% of over half a million malware samples, an accuracy rating an independent testing company called “very good” today. Germany-based ...

Microsoft will block users running counterfeit copies of Windows from installing the free Security Essentials antivirus software, the head of the company’s anti-piracy group said yesterday. Security ...

Microsoft will block users running counterfeit copies of Windows from installing the free Security Essentials antivirus software, the head of the company's anti-piracy group said yesterday. Security ...

The recent inclusion of Microsoft Security Essentials antivirus software in the company's Microsoft Update service has caused some competitors to warn that this action may be anti-competitive.

Microsoft will limit the number of downloads for the beta of Windows Security Essentials, its new free antivirus software, when it posts the program later today. Downloads will be capped at 75,000, a ...