"TriZetto said in a filing with Maine's attorney general on Friday that hackers stole patients' insurance eligibility transaction reports from the company's servers. The data includes personal information like patients' names, dates of birth, home addresses, and Social Security numbers, as well as information about their healthcare, such as their provider's name, demographic data, and health and insurance details."
"TriZetto said it identified the breach on October 2, 2025, but later discovered that the hackers had access as far back as November 2024. A spokesperson for Cognizant did not immediately respond to a request for comment, including why it took the company a year to detect the breach."
"In 2024, a ransomware attack at Change Healthcare, another health tech giant that processes some 15 billion healthcare transactions, allowed hackers to make off with more than 192 million patient files. The cyberattack sparked outages across the U.S., leaving many without access to medical treatments or medications."
TriZetto, owned by Cognizant and serving 200 million people across 875,000 U.S. healthcare providers, confirmed a major data breach affecting 3.4 million individuals. Hackers accessed patients' insurance eligibility transaction reports containing names, dates of birth, addresses, Social Security numbers, and healthcare details. The company discovered the breach on October 2, 2025, but determined unauthorized access began in November 2024. Multiple healthcare organizations, including OCHIN and California providers, confirmed compromised patient information. TriZetto stated not all customers were affected. This breach follows other significant healthcare cyberattacks, including a 2024 ransomware attack on Change Healthcare that compromised 192 million patient files.
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