Microsoft said the company has been "coordinating closely with CISA, DOD Cyber Defense Command, and key cybersecurity ...

This Alert was updated to reflect newly released information from Microsoft, and to correct the actively exploited Common ...

Microsoft has observed two named Chinese nation-state actors, Linen Typhoon and Violet Typhoon, exploiting vulnerabilities ...

Department of Homeland Security headquarters, several of its agencies and the Department of Health and Human Services have ...

Federal cybersecurity officials have issued a warning to Microsoft users about a security flaw allowing hackers to access to ...

Microsoft has confirmed that vulnerabilities in its on-premises SharePoint Server installations, a network spoofing vulnerability (CVE-202549706), ...

Hackers are actively exploiting a critical SharePoint zero-day (CVE-2025-53770), hitting 400+ firms and institutions like the ...

CISA gave agencies until the end of the day on Monday to mitigate a severe zero-day vulnerability in Microsoft's widely used ...

Microsoft warned of active zero-day attacks on SharePoint servers used by government and businesses, with FBI investigating.

Microsoft issued an alert about "active attacks" targeting its SharePoint server software, which is widely used by businesses and government agencies to share files.

The hackers behind the initial wave of attacks exploiting a zero-day in Microsoft SharePoint servers have so far primarily ...