A security researcher reported a vulnerability to Microsoft. But when the company didn't respond quickly enough, he went public with real exploit code.

Researchers confirm the bug works, while Microsoft gives a bland statement.

A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I ...

Exploit code has been released for an unpatched Windows privilege escalation flaw reported privately to Microsoft, allowing ...

Windows has a zero-day vulnerability that allows attackers to escalate their privileges. A patch is not yet available.

Windows 10 has reached the end of support, which means cybercriminals have it in their sights. You don't have to switch if ...

AI-powered fileless malware is changing what it means to keep a Windows 11 PC secure. Here's what's happening and what to do.

With Microsoft set to stop security updates for Windows 10 in October — unless you pay extra — security is top of mind for many businesses and individual users right now. And whether you’re planning ...

Microsoft's 2011 Secure Boot certificates expire June 2026, leaving millions of Windows 10 PCs vulnerable to boot-level ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. I first warned Forbes readers of the threat from something ...

Windows Security (formerly Windows Defender) is the built-in antivirus tool bundled with the operating system. It has saved ...