Your medical data is not as safe as you think. Discover how a massive ransomware attack exposed millions and the key steps to protect your privacy now.

The cyberattack at UnitedHealth Group's tech unit last year affected the personal information of 190 million people, the health conglomerate said on Friday, making it the largest healthcare data breach in the United States.

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.

A cyberattack on UnitedHealth Group Inc. that paralyzed the US health-care system last year, snarling billions of dollars in payments for doctors and hospitals, also exposed sensitive data from 190 million Americans.

UnitedHealth Group says the impact from the cyberattack last year at its Change Healthcare subsidiary is much wider than previously understood, affecting roughly 190 million patients — up from previou

The financial fallout has been severe. Profits for the company dropped by over a third in 2024, falling from around $22.3 billion in 2023 to approximately $14.4 billion last year. The projected total cost of recovery and remediation efforts is estimated to be between $2.3 billion and $2.5 billion.

The number of individuals confirmed to be affected by the data breach is almost double the company's previous estimate.

Updated tally at Change Healthcare, owned by the Eden Prairie-based health care giant, nearly doubles the number of people affected by the massive data breach.

The attack, originally thought to have impacted about a 100 million Americans, is even larger than originally disclosed.

The cyberattack at UnitedHealth Group exposed personal information of 190 million people, leading to a $22 million ransom payment in bitcoin.