A massive cyber-espionage campaign has compromised nearly 400 organizations globally by exploiting a critical vulnerability in Microsoft SharePoint servers. Eye Security researchers discovered the ongoing attacks,

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 attack on Microsoft server software used by thousands of government agencies and businesses to share documents within organisations is likely the work of a single actor, a cybersecurity researcher said on Monday.