Ransomware attack on Change Healthcare exposes Americans' health data

Summary: UnitedHealth Group confirms a ransomware attack on Change Healthcare led to a massive theft of Americans' health data. The attack affected a significant portion of the U.S. population as Change Healthcare handles health data for about half of all Americans. The cyberattack cost UnitedHealth over $870 million in losses, but the company still reported $99.8 billion in revenue for the first quarter of the year. CEO Andrew Witty is set to testify before House lawmakers on May 1.

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