Microsoft Threat Intelligence provides analysis of a ClickFix campaign that uses fake CAPTCHA prompts, DLL sideloading, and a reverse tunnel, with detections and hunting guidance.

Disable Windows Defender on Windows 10 and 11 using this portable tool to stop real-time monitoring, tamper protection, and Smart App Control with one click. A PowerShell-based malware designed to ...

Criminal services that hide malware are becoming easier to buy. These services, known as crypters, change a malicious file so that security tools struggle to recognize it. Their operators promise ...

A 7-Zip flaw can allow malware extracted from a specially crafted archive to lose Windows’ Mark-of-the-Web (MotW) label. Without that label, Windows SmartScreen may not display its usual reputation ...

Learn how BitLocker, passkeys, Microsoft Defender, and other Windows 11 security features protect your data, accounts, apps, and devices. Windows 11 comes with plenty of built-in security tools, but ...

Not every Windows PC runs Edge's scareware blocker by default. Here's the hardware cutoff and how to turn it on manually. Scareware websites are designed to frighten people into taking actions they ...

A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows machines to write files large enough to completely consume available disk ...

This method involves modifying a Registry value called DisableAntiSpyware. In older versions of Windows, this policy key was used by OEMs and IT administrators to disable Microsoft Defender Antivirus ...

Microsoft confirmed a Windows zero-click flaw tied to an incomplete patch is being exploited, putting credentials at risk for unpatched users. A Windows patch closed one door but left another cracked ...

Microsoft’s Defender deployment tool for Windows helps administrators manage device onboarding at scale with updated progress visibility and additional controls. The tool adapts to the operating ...

Microsoft has released fixes for six newly classified zero-day common vulnerabilities and exposures (CVEs) on the second monthly Patch Tuesday of 2026, amid a release comprising more than 50 flaws ...

Windows Sandbox is a built-in Windows feature, and it is best used when you want to run a suspicious file. It uses hardware virtualization to create a tiny, lightweight version of Windows inside your ...