Windows 11 Security
The latest Windows 11 Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft Kills SMS Codes for Microsoft Accounts in May 2026, Pushes Passkeys and Authenticator
Microsoft will stop supporting SMS-based authentication and account recovery for personal Microsoft accounts beginning May 2026. The company informed users via email and a support document update...
Microsoft to Phase Out SMS Sign-In from 2026: Embrace Passkeys, Authenticator App, and New Recovery Methods
Microsoft has drawn a line in the sand for SMS-based authentication. In a May 2026 announcement, the company confirmed it will phase out SMS codes for signing into personal Microsoft accounts and for...
MiniPlasma PoC Questions Windows 11 KB5089549 Fix for CVE-2020-17103 EoP Vulnerability
A newly released proof-of-concept (PoC) dubbed MiniPlasma is resurrecting concerns over a four-year-old local privilege escalation bug in Microsoft's Cloud Files Mini Filter Driver. The PoC,...
Microsoft Exchange, Edge, Windows 11 Hacked at Pwn2Own Berlin 2026: AI Tools Also Compromised
Researchers at the Pwn2Own Berlin 2026 hacking contest successfully compromised multiple fully patched high-value targets, including Microsoft Exchange, Microsoft Edge, Windows 11, Red Hat Enterprise...
Pwn2Own Berlin 2026: Edge, Windows 11, Exchange Zero-Days Exposed
Three critical zero-day exploits against Microsoft products were demonstrated on May 14 and 15 at Pwn2Own Berlin 2026, held alongside OffensiveCon. Security researchers successfully compromised...
YellowKey tool bypasses BitLocker on fully patched Windows 11 via WinRE exploit
Nightmare-Eclipse dropped a bombshell on May 12, 2026, publicly releasing YellowKey, a proof-of-concept tool that demonstrably bypasses BitLocker encryption on Windows 11, Windows Server 2022, and...
YellowKey PoC Claims BitLocker Bypass via WinRE USB on Windows 11
On May 12, 2026, a security researcher using the alias Nightmare-Eclipse published YellowKey, a proof-of-concept tool that claims to bypass BitLocker encryption on Windows 11 and Windows Server...
BitUnlocker Tool Breaches TPM BitLocker in Minutes Despite July Patch
A new proof-of-concept tool named BitUnlocker has exposed a critical weakness in Microsoft’s BitLocker encryption, allowing a determined attacker to unlock TPM-only protected drives in...
RADX PXIe GPU Module Fixes Windows 11 iGPU Security for Lab Systems
RADX Technologies has dropped a $2,499 GPU module that solves one of the most stubborn security headaches for industrial Windows 11 systems: outdated integrated graphics drivers blocking...
Khadas Mind 2 BIOS Flash Triggers Two-Hour BitLocker Recovery Ordeal on May 10
A routine BIOS update on the Khadas Mind 2 mini PC turned into a two-hour troubleshooting nightmare on May 10, 2026, when Windows 11’s BitLocker drive encryption demanded a recovery key, locking...
KB5083769 Blocks psmounterex.sys, Breaking Backup Image Mounting on Windows 11
Microsoft’s April 2026 Patch Tuesday update has inadvertently crippled a critical backup feature for thousands of Windows 11 users. The KB5083769 security update, released on April 14, 2026, added...
Microsoft Defender Antivirus in 2026: April Guidance Says It's Enough for Most Windows 11 Users
Windows 11 users wondering whether they can ditch their paid antivirus subscriptions finally have a clear answer from Microsoft. The company’s April 2026 security guidance states that Microsoft...