windows security

Microsoft’s attempt to finally turn User Account Control into a real security boundary nearly unraveled before many users even saw the new design: Google Project Zero’s James Forshaw documented nine distinct bypasses against Windows 11’s new Administrator Protection during its insider-preview...

Microsoft’s attempt to make privilege elevation in Windows 11 a true security boundary ran into a harsh reality check: decades of legacy kernel behavior are hard to rewrite safely. Google Project Zero’s James Forshaw exposed multiple privilege‑escalation bypasses against the new Administrator...

Microsoft’s security tooling has once again collided with real‑world device workflows — this time stomping on the Xbox‑focused handheld experience and leaving owners unable to update or run critical OEM tools. Reported incidents show Windows’ application control layer blocking components of...

Security researchers have shown that a single, seemingly legitimate Copilot link could be turned into a stealthy data‑exfiltration pipeline — an attack chain the research community has labeled “Reprompt” — and the discovery raises urgent questions for anyone who uses Microsoft Copilot Personal...

Google Project Zero’s James Forshaw has pulled back the curtain on a subtle, multistage weakness that could have let attackers sidestep Microsoft’s new Administrator Protection model and silently obtain administrator privileges — and the discovery exposes how decades-old Windows behaviors can...

A newly published security advisory from iba Systems warns that a flaw in ibaPDA could allow unauthorized actions on the file system under certain conditions — a risk that can affect confidentiality, integrity, and availability of managed measurement and acquisition data. The vendor’s fix is...

A massive, unsecured database containing roughly 149 million unique usernames and passwords — an estimated 96 GB of raw data — was discovered and reported this month by security researcher Jeremiah Fowler, and the fallout should be a wake-up call for every Windows user and administrator who...

If you’re about to hand off, sell, donate or recycle a Windows PC, the right way to wipe it matters — not just to protect your privacy, but to avoid hours of post‑sale headaches for the next user. The sensible playbook is simple: migrate what you need, make personal data irrecoverable, and...

Windows' built-in protection has come a long way — for many everyday users, Microsoft Defender (Windows Security) now provides a very credible baseline of protection, but whether you can safely rely on it alone depends entirely on what you do online, whose data you protect, and how disciplined...

Secure Windows 10/11: Turn On Core Isolation (Memory Integrity) + Fix Driver Blocks Difficulty: Intermediate | Time Required: 15 minutes Core Isolation’s Memory integrity feature (also called HVCI – Hypervisor-Protected Code Integrity) adds an extra security layer that helps prevent malicious or...

Fast Startup is designed to shave seconds off cold boots by saving a partial OS state to disk, but because it deliberately preserves kernel and driver state between shutdowns it can also hide faults, block other operating systems from safely accessing Windows volumes, and interfere with certain...

Johnson Controls’ iSTAR Configuration Utility (ICU) tool has a newly disclosed vulnerability — a stack‑based buffer overflow assigned CVE‑2025‑26386 — that can crash the Windows host running the utility and, in certain conditions, enable more severe host‑impact outcomes if exploited. The...

Microsoft’s January Patch Tuesday includes a high-priority update that refreshes expiring Secure Boot certificates on Windows devices — a preventative, must-install fix that closes a narrow but critical window attackers could use to install persistent bootkits before the OS loads. rview UEFI...

Microsoft has begun a staged hardening of Kerberos on Windows domain controllers: starting with security updates released on January 13, 2026, domain controllers will gain new telemetry and audit controls that identify weak Kerberos encryption usage, and Microsoft plans a phased default flip so...

Microsoft’s January 13, 2026 cumulative updates finally put an end to the months‑long outbreak of noisy, misleading security alerts that flagged a core Windows library—WinSqlite3.dll—as vulnerable, restoring calm to SOC queues and IT help desks overwhelmed by false positives. Background For much...

Microsoft’s long-standing prescription that users should routinely change their Windows passwords has finally been exposed for what security researchers and standards bodies have long argued: a low-value, usability-damaging relic that produces more problems than protection. The change in...

Title: CVE-2026-21223 — What Windows admins and power users need to know about the Microsoft Edge Elevation Service VBS bypass Summary A privilege-validation bug in the Microsoft Edge Elevation Service (Chromium-based Edge) has been assigned CVE-2026-21223. The service exposes a privileged COM...

If you use Windows, Microsoft Office, Azure services, SQL Server, or Microsoft developer tools, treat the latest advisories as urgent: India’s national cyber‑security agency CERT‑In has flagged multiple high‑severity Microsoft vulnerabilities and Microsoft has issued January 2026 security...

Windows and Microsoft product users are facing renewed urgency after a flurry of security advisories and the January 13, 2026 Patch Tuesday that fixed more than a hundred vulnerabilities — including at least one flaw Microsoft says was actively exploited in the wild — and security agencies and...

Microsoft quietly pulled the standalone Windows 10 security update KB4524244 after users and administrators reported installation failures, system freezes, and broken recovery paths, exposing a rare but serious problem: a security patch designed to protect the UEFI Secure Boot environment can...