Last year, the Department of Homeland Security released a scathing report detailing Microsoft’s mistakes during a 2023 hack in which China stole thousands of emails from top government officials. Two years before that, China-linked cyberattackers compromised more than 250,000 Microsoft Exchange servers.

Microsoft warns of hackers exploiting SharePoint vulnerabilities to breach critical organizations, including U.S. nuclear security.

Researchers say Chinese actors, along with other criminal hackers, exploited a security flaw in SharePoint software widely used by governments and businesses.

A significant flaw in a widely used Microsoft product allowed multiple Chinese-linked hacking groups to breach dozens of organizations across the globe and at least two U.S. federal agencies.

Microsoft Corp. said a Chinese hacking group is exploiting security vulnerabilities in the company’s SharePoint servers to deploy ransomware, following a cyberattack discovered last week that has affected hundreds of entities around the world.

Several entities in South Africa have been compromised by hackers who exploited a security vulnerability in Microsoft's (NASDAQ:MSFT) SharePoint servers, according to Eye Security, the cybersecurity company that identified an early wave of attacks last week,