A UnitedHealthcare security advisory regarding a previous ransomware attack against one of its subsidiaries updates the number of impacted individuals, almost doubling the number first disclosed.

UnitedHealth has revealed that 190 million Americans had their personal and healthcare data stolen in the Change Healthcare ransomware attack, nearly doubling the previously disclosed figure.

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

The impact of the Change Healthcare ransomware-caused data breach has increased from 100 million to 190 million individuals.

The largest healthcare data breach on record just got even bigger, after UnitedHealth Group (UHG) confirmed that 90 million additional customers were impacted by a ransomware attack on Change Healthcare last year.

Education technology giant PowerSchool has confirmed a data breach that may have exposed information on millions of schoolchildren, putting them at risk of identity theft. PowerSchool has over 18,000 clients,

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.

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.

The cyberattack at UnitedHealth's tech unit Change affected the personal information of 190 million Americans, TechCrunch reported on Friday.