Chinese State-Sponsored Hackers Exploited Vulnerabilities in Microsoft SharePoint

Chinese State-Sponsored Hackers Exploited Vulnerabilities in Microsoft SharePoint

Chinese state-sponsored hackers exploited vulnerabilities in Microsoft’s SharePoint software, breaching systems of hundreds of companies and government agencies, including the National Nuclear Security Administration and the Department of Homeland Security, with attacks detected as early as July 7, 2025. Microsoft has used China-based engineers to maintain SharePoint for years, a practice not disclosed in its hack announcement, raising concerns …