Chubb, a major cybersecurity insurance provider for businesses hit by data breaches, has itself become a target of a data breach.

The insurance giant told TechCrunch it was investigating a “security incident” involving the unauthorized access to data belonging to an unnamed third-party. Chubb spokesperson Jeffrey Zack said the company had “no evidence” the incident affected Chubb’s own network and that its network “remains fully operational.”

But the spokesperson declined to comment further or answer any of our questions, including if its customers were affected.

Brett Callow, a threat analyst at security firm Emsisoft, first alerted TechCrunch to the breach on Thursday. According to Callow, the security incident was a data-stealing ransomware attack launched by the Maze ransomware group. Maze not only spreads across a

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