Ukraine's Computer Emergency Response Team (CERT) says that Russian hackers are exploiting CVE-2026-21509, a recently patched vulnerability in multiple versions of Microsoft Office.

Microsoft has confirmed that a known issue preventing some Windows 11 devices from shutting down also affects Windows 10 systems with Virtual Secure Mode (VSM) enabled.

Fake virus alerts are scams designed to make you panic and click on malicious links or download harmful software. Watch out for red flags like poor grammar, weird URLs, flashing warnings, and messages ...

In 2026, the company says it will focus on addressing Windows 11's pain points, such as system performance and reliability.