Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

UnitedHealthcare

Disclosed Jun 9, 2023Confirmed

Official notice

What is known

People affectedNot stated in the sources we have
DisclosedJun 9, 2023
DiscoveredDec 29, 2022
HappenedDec 1, 2022
AttackHacking
Data exposedNames
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: UnitedHealthcare
Official noticeatg.wa.gov
Washington Attorney General breach notice: UnitedHealthcare
Official noticeattorneygeneral.delaware.gov
Delaware DOJ breach notice: UnitedHealthcare
Official noticejustice.oregon.gov
Oregon DOJ breach notice: UnitedHealthcare

Notices filed

Residents of ORJun 9, 2023
Oregon DOJ16,844 people
Residents of CAAug 31, 2023
California AGCount not stated
Residents of WAAug 31, 2023
Washington AG18,418 people
Residents of ORAug 31, 2023
Oregon DOJ315,915 people
Residents of DESep 22, 2023
Delaware DOJ470 people

Other breaches at UnitedHealthcare

Insider breachInsider exposed names and health records. Reported to the HHS archive.3,215 affectedInsuranceUSAug 12, 2025
History of this record
disclosed2026-09-25
2023-08-31 to 2023-06-09by backfillSource
data_types2026-09-25
[] to ["names"]by backfillSource
sector2026-09-25
other to financeby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2022-12-29by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about UnitedHealthcare