Harvard Pilgrim health network updates data breach total to nearly 2.9 million

Harvard Pilgrim Health Care revealed that a ransomware attack in spring 2023 impacted nearly 2.9 million people, a 12% increase over initial estimates. The attack affected service for days and the infiltrators remained in the system from late March to mid-April. The files potentially accessed could contain personal data and protected health information of current and former members and providers. The incident serves as another example of data breach impact often expanding over time as investigations progress.