Victims of the recent global hacking campaign include the National Institutes of Health and the National Nuclear Security Administration, officials said.

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

Hours after Microsoft revealed hacking groups affiliated with the Chinese government have been exploiting a flaw in its SharePoint software, Bloomberg News reports that the National Nuclear Security Administration has also been breached in the attacks.

Hackers have been exploiting a vulnerability to attack SharePoint and connected Microsoft services in what will be a big problem for corporate Mac users this week.

Microsoft’s first patch for a major SharePoint bug failed, leading to a cyber espionage spree affecting up to 9,000 servers, with China-linked actors named among the groups exploiting it.