Kidney dialysis provider DaVita experienced a ransomware breach by the Interlock gang affecting 916,000 people in the second-largest U.S. healthcare attack of 2025.

In January, the company had estimated the hack at Change Healthcare affected the personal information of 190 million people.

Although last year’s cyberattack at UnitedHealth was bad enough at 100 million when it was initially reported, the U.S.

Ann Arbor-based Michigan Medicine is notifying more than 1,000 people that some of their health information may have been exposed after a research study mailed postcards without envelopes. The ...

Hackers got patient data including names, birth dates, addresses, telephone numbers, email addresses, race or ethnicity and ...