The incident has reportedly impacted the servers of federal agencies, schools, and energy companies. Some emergency patches have been deployed. On July 19, Microsoft alerted users that it was experiencing an active cyberattack on its SharePoint servers,

Hackers exploited a major security flaw in widely used Microsoft server software to launch a global attack on government agencies and businesses.

The US agency overseeing nuclear weapons breached in a China-linked hack of Microsoft SharePoint, according to Bloomberg. Officials say no classified data was exposed and the impact was limited.