For most people using a supported and fully updated Windows 11 computer, yes: Microsoft Defender Antivirus and the other protections inside Windows Security are sufficient as the primary antivirus.

Learn how BitLocker, passkeys, Microsoft Defender, and other Windows 11 security features protect your data, accounts, apps, ...

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 ...

Not content with broken Windows updates, Microsoft has disclosed two problems with Defender for Endpoint on Linux – one that ...

Looking for the best antivirus for Windows 11? Check out our top picks to protect your device as well as your system and ...

According to new research from Blackpoint Cyber's Adversary Pursuit Group (APG), published on July 30, the intrusion hit two ...

Microsoft shares key Windows Server hardening tips, covering OSConfig, Defender, Server Core, App Control, and firewall ...

Scan and clean your PC with the Windows Malicious Software Removal Tool. Learn how to run it, check results, and remove ...

Explore July 2026 Microsoft Security updates, including agentic defense, AI threat protection, identity, data security, and ...

How I free up Windows disk space and shred sensitive data for free with open-source BleachBit ...

Microsoft on Wednesday morning issued an emergency update to its Microsoft Malware Protection Engine, closing CVE-2026-50656 — the Windows Defender privilege-escalation flaw known as RoguePlanet — 29 ...