The number of victims impacted by the Change Healthcare data breach last year has nearly doubled, from 100 million to approximately 190 million, parent company UnitedHealth Group told TechCrunch last week.

UnitedHealth now says the ransomware attack on its Change Healthcare subsidiary may have affected the data of about 190 million people. The estimate has increased from about 100 million people in October.

UnitedHealth says that the 2024 breach of Change Healthcare impacted the data of 190 million people, up from the prior estimate of 100 million people.

Large-scale attacks on health providers expose the data of millions of Americans each year. Consumers must remain vigilant, experts say.

UnitedHealth Group says the impact from the cyberattack last year at its Change Healthcare subsidiary is much wider than previously understood, affecting