Information tied to customers’ insurance claims and personal data may also have been breached in the cyberattack, Aflac said. “We regret that this incident occurred,” Aflac said. “We will be working to keep our stakeholders informed as we learn more and continue investigating the incident.”

It’s the largest insurance company yet to fall victim to a major hacking, with tens of millions of customers and a $55 billion market cap.

Aflac on Friday disclosed a cybersecurity incident in which personal information of its customers may have been compromised, making it the latest insurance provider to be targeted. The health and life insurance firm said the attack on its U.