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.”

Aflac has been hit with a cyberattack that may have resulted in the theft of personal data related to the insurer’s U.S. business.

Some of the files accessed may contain claims, health information, social security and other personal information that may include customers, their beneficiaries, employees, agents or other individuals.