Every public data breach

44 disclosed this week · 26,355 on record

Prominence Health Plan

Disclosed Jun 18, 202145,380 affectedConfirmed

Official notice

The covered entity (CE), Prominence Health Plan, reported that its business associate (BA) suffered a cyber-attack that affected the electronic protected health information (ePHI) of approximately 45,380 individuals. The ePHI involved included names, addresses, dates of birth, health insurance information, claim codes, and other treatment information. The CE notified HHS, affected individuals, and the media. The CE also provided affected individuals with a dedicated phone number for questions and concerns. In response to the breach, the BA strengthened its technical and security safeguards.

What is known

People affected45,380 (as reported to HHS)
DisclosedJun 18, 2021
HappenedNov 30, 2020
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
organization to hhsby backfillSource
records2026-09-25
45000 to 45380by backfillSource
summary2026-09-25
empty to The covered entity (CE), Prominence Health Plan, reported that its business associate (BA) suffered a cyber-attack that affected the electronic protected health information (ePHI) of approximately 45,380 individuals. The ePHI involved incluby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 45000by 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.

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