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 ...

One of the hacked organizations reportedly includes the U.S. agency responsible for maintaining the country's stockpile of ...

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 ...

A series of cyberattacks targeting Microsoft collaboration software, specifically SharePoint, have been linked to Chinese ...

More than 400 systems have been compromised so far in the widespread cyberattacks exploiting vulnerabilities in Microsoft ...

Microsoft SharePoint zero-day flaws were exploited to breach over 50 organizations, including the National Nuclear Security ...