Cognizant’s TriZetto Subsidiary Reports Data Breach Affecting 3.4 Million Patients
TriZetto Provider Solutions, a healthcare-technology subsidiary of Cognizant, has disclosed a large data breach that exposed the protected health information of 3,433,965 patients. The company classified the incident as an external system hacking event after threat actors gained unauthorized access to TriZetto’s external infrastructure. Timeline and discovery Initial unauthorized access occurred on November 19, 2024. TriZetto did not detect the intrusion until November 28, 2025, meaning the intrusion persisted undetected…