UnitedHealth Confirms Change Healthcare Cyberattack Impacted 190 Million People

UnitedHealth Group has officially disclosed that the February ransomware attack on its subsidiary, Change Healthcare, affected approximately 190 million individuals in the U.S.—nearly twice the previously estimated figure.

The healthcare giant confirmed the revised number in a statement to TechCrunch on Friday, after market hours.

“Change Healthcare has determined the estimated total number of individuals impacted by the Change Healthcare cyberattack is approximately 190 million,” said Tyler Mason, a UnitedHealth spokesperson, in an email to TechCrunch. “The vast majority of those people have already been provided individual or substitute notice. The final number will be confirmed and filed with the Office for Civil Rights at a later date.”

UnitedHealth also stated that there is no evidence suggesting the stolen data has been misused. “The company is not aware of any misuse of individuals’ information as a result of this incident and has not seen electronic medical record databases appear in the data during the analysis,” the spokesperson added.

The cyberattack, which occurred in February 2024, stands as the most significant medical data breach in U.S. history. It led to prolonged disruptions across the heal

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