The company said state-backed hacking groups were breaching systems through flaws in SharePoint, which is used by the U.S.

Major cyberattacks in 2025 so far have included the Microsoft SharePoint Server “ToolShell” attacks, the ransomware attack ...

A critical SharePoint zero-day (CVE-2025-53770) has been used to breach 400 firms, including the US nuclear agency. Microsoft ...

The SharePoint vulnerabilities that Microsoft released emergency patches for earlier this week – tracked as CVE-2025-53770 ...

The U.S. government agency that maintains and designs America's nuclear weapons was reportedly breached by attackers ...

The Department of Energy, which oversees the agency that manages the US nuclear weapons stockpile, confirms it was affected ...

Unknown threat actors have reportedly breached the National Nuclear Security Administration's (NNSA) network in attacks ...

Unknown threat actors have breached the National Nuclear Security Administration's network in attacks exploiting a recently ...

Victims of the recent global hacking campaign include the National Institutes of Health and the National Nuclear Security ...

A critical vulnerability in on-premise SharePoint servers allowed state-backed hackers to breach governments and institutions ...

Microsoft is facing mounting scrutiny after Chinese state-linked hacking groups exploited a critical flaw in its SharePoint ...

CISA flags Microsoft SharePoint flaws under active attack by Chinese hackers. U.S. agencies must patch by July 23 ...