Aflac, one of America’s largest insurance providers, confirmed on Friday that it had been the victim of a cyberattack that stole the personal information of its customers, including Social Security numbers.

Aflac says its IT teams prevented any malware from being installed, but it’s possible the hackers accessed sensitive data on users. Is the 'Scattered Spider' cybercrime gang to blame?

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.