UnitedHealth Group, one of the biggest players in U.S. healthcare, recently disclosed a significant cyberattack that compromised the personal data of nearly half the American population. The breach has left many questioning the security of sensitive health information in an increasingly digitized industry.

The company is still reeling from the murder of Thompson, which unleashed a torrent of pent-up anger and resentment toward the insurance industry.

Noel, who has served as the head of Medicare and Retirement at UnitedHealthcare, becomes its new CEO, following the fatal shooting of Brian Thompson in December.