Nebraska AG sues Change Healthcare, UnitedHealth Group, Optum over alleged security failures leading to the largest data breach in U.S. history.

The attorney general in Nebraska has sued Minnetonka-based UnitedHealth Group over a cyberattack earlier this year at the company’s Change Healthcare subsidiary that affected the personal health data of about 100 million patients and hobbled systems for filling prescriptions and paying health care providers across the country.

This article has been updated to include response from UnitedHealth Group and the Nebraska Hospital Association. LINCOLN — Nebraska on Monday became the first state to sue Tennessee-based Change Healthcare over the company’s massive data breach that cost at least 575,

One of the largest healthcare technology companies in the world gets targeted by ransomware attack, potentially leaking millions of Americans' sensitive information to the dark web.