A sweeping cyber espionage operation took aim at Microsoft’s SharePoint servers, and compromised about 100 different organizations. That’s according to two of the firms that helped uncover the attack.

A July 8 fix for a critical SharePoint zero-day failed to stop active exploitation, enabling state-backed attackers to breach nearly 100 organizations worldwide.

Microsoft Corporation (NASDAQ:MSFT) is one of the best 52-week high stocks to buy now. On July 21, the software giant released a patch for a vulnerability that affected the servers of the SharePoint document management software.

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 major security vulnerability in Microsoft's widely used Sharepoint server software has been exploited by hackers, causing chaos within businesses and government agencies.

More than 400 organizations have been compromised in the Microsoft SharePoint attack, according to Eye Security, which initially sounded the alarm on the mass exploitation last Friday, even before Redmond confirmed the critical vulnerabilities.

Google has revealed that recent cyberattacks targeting Microsoft SharePoint servers were linked to a Chinese threat actor. The espionage operation, which compromised around 100 organizations, highlights ongoing cybersecurity tensions.

Chrome users need to update their browsers immediately as Google addresses a critical vulnerability that hackers are actively exploiting. Additional security measures are recommended.