windows security

Most Windows users think “administrator” is the ceiling of local power on a PC, but Windows has always kept one account in reserve that sits above the normal admin experience. The built-in Administrator account exists on every Windows installation, and when it is enabled it can run applications...

Microsoft’s March 2026 security guidance includes CVE-2026-4437, a flaw described as a case where gethostbyaddr and gethostbyaddr_r may incorrectly handle a DNS response. The wording is brief, but it signals a bug in a long-standing reverse-lookup path that many applications still depend on for...

Microsoft’s March 2026 security guidance adds a subtle but important new DNS-related flaw to the long list of issues administrators need to track: CVE-2026-4438. The advisory describes a case where gethostbyaddr and gethostbyaddr_r can return invalid DNS hostnames, which sounds narrow at first...

Windows has a built-in feature called Dynamic Lock that uses a paired Bluetooth device—usually your phone—to automatically lock your PC when you walk away. The idea is simple: if your phone is no longer nearby, Windows assumes you’ve left and locks the session for you. It is one of those quietly...

CVE-2026-4224 and the XML parsing risk that should worry Windows admins Microsoft’s vanished CVE-2026-4224 page has left security teams with an uncomfortable gap: a title that points to a stack overflow while parsing XML with deeply nested DTD content models, but no public detail to anchor...

Microsoft’s Secure Boot certificate deadline is no longer a distant infrastructure footnote. The company has confirmed that the 2011-era Secure Boot certificates used across Windows devices begin expiring in June 2026, and it is warning that systems which fail to receive the newer 2023...

Windows edition choice is one of those deceptively small decisions that can shape everyday computing in surprisingly important ways, and the difference between Home, Pro, Education, and Enterprise is bigger than Microsoft’s surface-level marketing suggests. The key distinction is not speed...

The Microsoft Security Response Center’s page for CVE-2026-32775 returns a blunt “page not found” message — and that single absence is the opening line of a far larger story about how modern vulnerability tracking, attribution and remediation can fail defenders at the moment they need it most...

Use Smart App Control in Windows 11 to Block Untrusted Apps Safely Difficulty: Beginner | Time Required: 10 minutes Smart App Control is a built-in Windows 11 security feature that helps block untrusted, unsigned, or potentially harmful apps before they can run. It adds another layer of...

Microsoft’s out‑of‑band hotpatch KB5084597, quietly deployed in mid‑March 2026, closes a cluster of critical remote‑code‑execution flaws in the Windows Routing and Remote Access Service (RRAS) management tool — and it does so using Microsoft’s hotpatch mechanism so eligible enterprise endpoints...

The emergence of hypervisor-based Denuvo bypasses is not just another chapter in the long war between DRM and crackers — it is a technical shift that forces Windows users to confront a stark trade‑off: run unsigned, kernel‑level virtualization code that can mask Denuvo checks, or keep...

If you watched the Fathom Journal tutorial clip that promises a one‑stop walkthrough of how to download and install uTorrent on Windows 10 and Windows 11, you’re not alone: the basic installer path is simple, but the wider picture—security, bundleware, Windows Defender flags, and legal risk—is...

Microsoft released an out‑of‑band hotpatch on March 13, 2026 that fixes a set of remote network‑service vulnerabilities in the Windows Routing and Remote Access Service (RRAS) management tool — and, crucially for enterprises, the package is delivered as a restartless hotpatch to devices enrolled...

Microsoft pushed an out‑of‑band hotpatch on March 13, 2026—KB5084597—that quietly targets a set of high‑risk vulnerabilities in the Windows Routing and Remote Access Service (RRAS) management tool and is being delivered only to devices configured to receive hotpatch updates...

Microsoft’s March Patch Tuesday landed this week with another heavy set of fixes — security teams should stop what they’re doing, check their inventory, install updates and restart affected machines as soon as practical. The rollout patches dozens of vulnerabilities across Windows, Office, SQL...

Microsoft pushed a heavy Patch Tuesday to Windows and Office environments on March 10, 2026 — and if you haven’t checked your PCs and servers yet, now is the time to do it. The March 10, 2026 security rollup addresses a large cluster of vulnerabilities across Windows, Office, .NET and SQL...

A chain of flaws in the Azure Arc / Azure Connected Machine agent for Windows can let a low‑privileged local user hijack agent service communications, impersonate the machine’s cloud identity, escalate to NT AUTHORITY\SYSTEM and — in the worst case — cause the machine to register to an...

Microsoft has cataloged CVE-2026-26128 as an elevation-of-privilege defect in the Windows SMB Server that allows an authorized (local) attacker to escalate privileges on affected systems — an urgent operational risk for any organization that does not treat local-attack vectors and SMB components...

Microsoft’s security tracking has catalogued CVE-2026-23656 as a Windows App Installer spoofing vulnerability that can allow an unauthenticated actor to present spoofed installer UI or metadata by exploiting insufficient verification of data authenticity in the App Installer component, and...

Microsoft’s March 2026 patch batch includes a newly catalogued Windows Graphics Device Interface (GDI) vulnerability tracked as CVE‑2026‑25190, a high‑severity code‑execution issue that Microsoft and third‑party trackers describe as a GDI “Remote Code Execution” class problem—yet the technical...