(Reuters) -The hack at UnitedHealth Group's tech unit potentially compromised a third of Americans' data, including U.S. military members' data, the largest U.S. health insurer's CEO told a Congressional committee in May.
The exact impact of the Feb. 21 hack on patient data is not yet clear, but the breach adds to a growing list of increasingly disruptive cyber attacks on U.S. healthcare companies.
The following is a list of the biggest IT hacks in the sector where patient data was breached:
Type of
Name of Year Individuals company
company affected
Anthem Inc 2015 78,800,000 Health insurer
American 2019 26,059,725 Medical debt
Medical collector
Collection
Agency
HCA 2023 11,270,000 Hospital operator
Healthcare
Premera Blue 2015 11,000,000 Health insurer
Cross
Excellus 2015 9,358,891 Health insurer
Health Plan,
Inc
Perry 2023 8,952,212 Medical transcription
Johnson & service provider
Associates
(PJ&A)
Managed Care 2023 8,861,076 Dental insurer
of North
America
(MCNA
Dental)
Welltok Inc 2023 8,493,379 Healthcare technology
provider
PharMerica 2023 5,815,591 Healthcare provider
Corp
Source: Government data, company reports
(Reporting by Sneha S K and Mariam Sunny in Bengaluru)
