A patch Microsoft released on Wednesday to fix a zero-day vulnerability in its Defender security engine may cause Windows ...

Microsoft has tackled yet another zero-day vulnerability published by a disgruntled security researcher with a vendetta ...

A week ago, the security researcher who goes by “Nightmare Eclipse” published information about RoguePlanet, a zero-day security vulnerability in Microsoft’s Defender security program. The ...

Microsoft Defender RoguePlanet vulnerability has been patched after a zero-day flaw was disclosed following the June 2026 ...

CISA says ransomware gangs are exploiting Microsoft Defender’s BlueHammer flaw, patched in April 2026 after zero-day reports.

A Dec. 12 posting to Microsoft’s security update guide has confirmed that a Windows Defender vulnerability, rated as critical according to Microsoft itself, could have enabled an attacker who ...

Q: What does Trend Micro’s Internet Security do over Windows Defender? A: Cyber threats today aren’t just about viruses. Phishing scams, ransomware attacks and identity theft are all evolving, making ...

Microsoft Defender offers great protection from malware -- but there are other online threats you might want to consider, too.

Do you still need third-party antivirus on your Windows PC?

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ransomware protection, VPN limits, ...

Microsoft account security is essential for protecting data across Outlook, Xbox, and Windows devices. Unprotected accounts are prime targets for phishing, ransomware, and unauthorized access, making ...