Microsoft previews automatic device isolation in Defender for Endpoint

The new capability will be added to the automatic attack disruption tool, however, new research warns that the tool has to be ...

2 New Microsoft Defender Zero-Days Exploited—Patch Now Rolling Out

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

Microsoft Defender Zero-Days Patched: RedSun, UnDefend Exploits Already Used in Live Intrusions

Microsoft pushed out-of-band patches on May 21, 2026, for two actively exploited Windows Defender zero-days — one that lets a ...

These 5 critical Windows Defender settings are off by default - turn them on ASAP

Windows Defender has several security settings, including some you need to switch on to get the utmost protection. Here's why.
TechRepublic

Microsoft Defender Flaws Exploited on Windows, Two Left Unpatched

Although the team with Microsoft moved swiftly to patch the BlueHammer vulnerability, other exploits still threaten Microsoft Defender and Windows users. No less than ...
MUO on MSN

I thought my browser downloads were slow — Windows Defender was actually the problem

The system that defends your computer may be throttling your downloads.

Microsoft warns of new Defender zero-days exploited in attacks

On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in ...
SecurityWeek

Microsoft Patches Exploited UnDefend and RedSun Defender Zero-Days

Microsoft this week released patches for two vulnerabilities in Defender, warning they have been exploited in the wild as ...