The Microsoft Defender Security Research Team has confirmed that a pervasive new authentication code attack is compromising ...

Threat actors have been exploiting the BlueHammer Microsoft Defender vulnerability as a zero-day to gain System privileges.

In early 2026, email threats increased with a rise in credential phishing, QR code phishing, and CAPTCHA-gated campaigns, ...

Microsoft has announced a new e-mail security dashboard in Microsoft Defender for Office 365, offering customers visibility into threat detection metrics and benchmarking data. "At Microsoft, we ...

Microsoft 365 administrators can use built-in Defender for Office 365 tools to enable impersonation and domain protection, reducing phishing risks by identifying spoofed senders and untrusted domains.