Microsoft Defender offers great protection from malware -- but there are other online threats you might want to consider, too ...

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Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by attackers.

In this post, we will show you how to find the Windows Defender Antivirus signature version in Windows 11. Microsoft Defender is Windows’ built-in antivirus that helps protect your PC from viruses, ...

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart attackers' attempts to move laterally across the network. This is now ...

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ...

New PoC shows how Microsoft Defender can be tricked into rewriting malicious files into protected locations, enabling SYSTEM-level privilege escalation on fully patched Windows systems. Days after ...

Microsoft Corp. Friday detailed a broad set of security updates and enhancements aimed at helping enterprises secure the rise of agentic artificial intelligence — while arguing that the industry needs ...

CISA has given U.S. government agencies two weeks to secure their Windows systems against a Microsoft Defender privilege escalation vulnerability that has been exploited in zero-day attacks. Tracked ...

The new capability will be added to the automatic attack disruption tool, however, new research warns that the tool has to be tuned to avoid it becoming an attack vector. Microsoft is previewing a new ...