Windows Security
The latest Windows Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft's 2026 Kernel Trust Change: Ending Legacy Cross-Signed Driver Support in Windows
Microsoft is preparing to implement one of the most significant Windows kernel trust changes in years, scheduled for April 2026. This security hardening measure will block legacy cross-signed drivers...
KB5081151 update targets Secure Boot cert expiry requiring IT coordination before June 2026
Microsoft released KB5081151, a Safe OS Dynamic Update for Windows 11 version 26H1, on March 26, 2026. This update arrives as organizations face a critical infrastructure deadline: the expiration of...
Windows Built-in Administrator Account: Security Risks, UAC Bypass, and Best Practices for Enterprise IT
Microsoft's Windows operating system contains a hidden administrative account with privileges that exceed even standard administrator accounts, creating both powerful troubleshooting capabilities and...
CVE-2026-4437: Critical Windows DNS Reverse Lookup Vulnerability Requires Immediate Patching
Microsoft's March 2026 security update addresses CVE-2026-4437, a critical vulnerability in the gethostbyaddr and gethostbyaddr_r functions that could allow attackers to manipulate DNS reverse lookup...
CVE-2026-4438: Microsoft Patches Critical gethostbyaddr Reverse DNS Vulnerability
Microsoft's March 2026 security updates include a critical vulnerability in the gethostbyaddr function that could allow attackers to bypass security controls through manipulated reverse DNS lookups....
Windows Dynamic Lock: How Bluetooth Proximity Auto-Locks Your PC for Security
Microsoft's Dynamic Lock feature automatically secures your Windows PC when you walk away, using Bluetooth proximity detection with your smartphone. This built-in Windows security tool represents a...
CVE-2026-4224: Microsoft's Vanished XML DTD Vulnerability Page Leaves Windows Admins in the Dark
Microsoft's CVE-2026-4224 security advisory page has disappeared from public view, creating confusion and concern among Windows administrators about a critical XML parsing vulnerability. The vanished...
Secure Boot Certificates Expire June 2026: Critical Windows Security Update Required
Microsoft's Secure Boot infrastructure faces a fundamental expiration event in June 2026 that will impact millions of Windows devices. The certificates that have validated Secure Boot since Windows...
Windows Home vs Pro vs Education vs Enterprise: Complete Feature Comparison Guide
Microsoft's Windows operating system comes in multiple editions, each with distinct capabilities that significantly impact how users and organizations can utilize their devices. The choice between...
CVE-2026-32775 Missing: How Microsoft's Security Communication Gaps Impact Windows Users
The Microsoft Security Response Center's page for CVE-2026-32775 returns a blunt "page not found" message. This single absence reveals significant gaps in Microsoft's vulnerability disclosure process...
Microsoft Deploying Silent Hotpatch KB5084597 for Critical RRAS RCE Vulnerabilities
Microsoft has quietly deployed an out-of-band hotpatch, KB5084597, in mid-March 2026 to address multiple critical remote code execution vulnerabilities in the Windows Routing and Remote Access...
Hypervisor Bypasses for Denuvo DRM: How Windows Security Trade-offs Affect Gamers and System Stability
The emergence of hypervisor-based Denuvo bypasses represents more than just another escalation in the ongoing battle between DRM developers and software crackers. This technical shift forces Windows...