A sweeping cyber espionage operation targeting Microsoft server software compromised about 100 organizations as of the weekend, two of the organizations that helped uncover the campaign said.

A global cyberattack is unfolding as hackers exploit a critical zero-day vulnerability in Microsoft's SharePoint software, threatening tens of thousands of on-premises servers used by

Microsoft has relied on engineers based in China for years to help maintain some of the U.S. Department of Defense’s

Microsoft Corp. advirtió que piratas informáticos están atacando activamente a los clientes de su software de gestión de documentos SharePoint, y los investigadores de seguridad han señalado el riesgo de que se produzcan violaciones de seguridad a gran escala en todo el mundo.

Hackers exploited a zero-day vulnerability in Microsoft SharePoint servers, targeting US federal agencies and other entities.