The company uncovers evidence that at least three China-based hacking groups are abusing the zero-day flaw in SharePoint software to access servers.

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

A security patch released by Microsoft earlier this month failed to fully fix a critical flaw in the U.S. tech company's SharePoint server software that had been identified at a hacking competition in May,

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.

Researchers first uncovered a sweeping cyber espionage operation targeting Microsoft server software affecting at least 100 organisations.

Microsoft Corp.’s server software is under attack from unidentified hackers, with cybersecurity analysts warning of widespread security breaches across the globe.The Redmond, Washington-based software maker said it had released a new security patch for customers to apply to their SharePoint servers “to mitigate active attacks targeting on-premises servers,