Microsoft has issued an urgent security warning following a wave of cyberattacks targeting SharePoint servers used by government bodies and businesses to manage internal document sharing. The attacks have exploited a critical vulnerability in on-premises SharePoint software, prompting the tech company to release immediate security updates, Reuters reports.
The FBI confirmed on Sunday that it is aware of the attacks and is collaborating with federal and private-sector partners, although further details were not disclosed. Microsoft clarified that only self-hosted SharePoint servers are affected — the cloud-based SharePoint Online, part of Microsoft 365, remains secure.