UnDefend

Microsoft Defender Zero-Day “BlueHammer” Hits KEV Catalog Following Researcher’s Protest BlueHammer Exploit Microsoft Defender LPE

BlueHammer Exploit Microsoft Defender LPE

Microsoft Defender Zero-Day “BlueHammer” Hits KEV Catalog Following Researcher’s Protest

Do Son April 23, 2026

CISA has officially added a fresh vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, citing evidence of...

Zero-Day Alert: The “Red Sun” Vulnerability Turning Microsoft Defender into a Hacker’s Tool Red Sun vulnerability

Red Sun vulnerability

Zero-Day Alert: The “Red Sun” Vulnerability Turning Microsoft Defender into a Hacker’s Tool

Do Son April 20, 2026

Microsoft Defender, formerly designated as Windows Defender, serves as the quintessential security suite for Windows 10 and...