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44 disclosed this week · 26,355 on record

Premera Blue Cross

Disclosed Mar 5, 202333,212 affectedConfirmed

Official notice

The covered entity (CE), Premera Blue Cross, reported that a software application used by its business associate (BA) exposed the protected health information (PHI) of 33,212 individuals. The PHI involved included names, addresses, dates of birth, phone numbers, and health insurance information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE and BA implemented additional administrative and technical safeguards to better protect PHI.

What is known

People affected33,212 (as reported to HHS)
DisclosedMar 5, 2023
DiscoveredOct 20, 2023
HappenedMay 30, 2023
AttackHacking
Data exposedNamesHealth
SectorFinance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Premera Blue Cross

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 33212by backfillSource
summary2026-09-25
empty to The covered entity (CE), Premera Blue Cross, reported that a software application used by its business associate (BA) exposed the protected health information (PHI) of 33,212 individuals. The PHI involved included names, addresses, dates ofby backfillSource
disclosed2026-09-25
2023-07-10 to 2023-03-05by backfillSource
disclosed2026-09-25
2024-04-19 to 2023-07-10by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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