Microsoft warned that Chinese state-sponsored actors were exploiting flaws in the SharePoint software of institutions across the globe.

The number of companies and organizations compromised by a security vulnerability in Microsoft Corp.’s SharePoint servers is increasing rapidly, with the tally of victims soaring more than sixfold in ...

The disclosure marks a potential escalation in the campaign, which has already hit at least 400 victims, according to Netherlands-based cybersecurity firm Eye Security.