<ul><li>The largest health care company in the world, UnitedHealth Group, has suffered the worst health care data breach in history, affecting 100 million people.</li><li>The breach occurred in February 2024 through a ransomware attack on Change Healthcare, a subsidiary of UnitedHealth Group.</li><li>The cybercriminals exploited a lack of multi-factor authentication on login credentials.</li><li>The hack resulted in disruptions to pharmacies, unfilled prescriptions, delayed payments to doctors and hospitals, and insurance companies unable to reimburse medical providers.</li></ul>

100 million affected in worst U.S. health care data breach of all time

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