Microsoft ($MSFT) has scaled back Chinese companies’ access to its early warning system for cybersecurity flaws. The change follows a wave of ...

The tech giants have evidence that Chinese hackers are exploiting the new bug, but warned "multiple actors" are also hacking into affected SharePoint systems.

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