Microsoft has released an emergency patch for CVE-2026-21509, a zero-day Office vulnerability under active exploitation that ...

Microsoft is warning admins of an Office security bypass zero day vulnerability that can be triggered simply by a user ...

Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks ...

Microsoft released out-of-band patches for an actively exploited Microsoft Office zero-day, CVE-2026-21509, a security ...

Microsoft 365 services, including Outlook, Defender, Purview, and Teams, were down on Thursday ...

Microsoft confirms major outage disrupting Outlook, Teams and Microsoft 365 for tens of thousands of users nationwide.

Microsoft 365 suffered a global outage affecting Teams, Outlook, and Office apps, but Microsoft confirms the issue was ...

Multiple Microsoft services, including Azure, Teams, and Defender XDR, faced reported outages Tuesday afternoon. Problems ...

In this post, we will learn what is Passive Mode and how to enable Defender for Endpoint in Passive mode (EDR in Block Mode) ...