A group of cybercriminals hacked into data systems at insurance company Aflac, possibly gaining access to sensitive information such as Social Security numbers and health reports, the company said on Friday.

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.

It's possible that Social Security numbers may have been compromised. It's unclear how many people may have been affected.