New Windows Defender zero-day blocks Microsoft antivirus updates

Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates.
Forbes

Hackers Bypass Windows Defender Security — What You Need To Know

Update, March 31, 2025: This story, originally published March 29, has been updated with an explanation of LOLBINS as well as further technical information regarding the Windows Defender Application ...
TechPowerUp

Microsoft Patches Windows Defender Bug That Insisted Your Antivirus Was Off

Microsoft has fixed the bug that made Windows Security wrongly claim Microsoft Defender Antivirus was turned off. According to Windows Latest, the fix comes in Defender platform update 4.18.26080.4, ...
Forbes

Microsoft Confirms Critical Windows Defender Security Vulnerability

A Dec. 12 posting to Microsoft’s security update guide has confirmed that a Windows Defender vulnerability, rated as critical according to Microsoft itself, could have enabled an attacker who ...
TechRepublic

Windows 11 Security Cheat Sheet: BitLocker, Passkeys, and Defender Explained

Learn how BitLocker, passkeys, Microsoft Defender, and other Windows 11 security features protect your data, accounts, apps, and devices. Image generated via ChatGPT Windows 11 comes with plenty of ...