Every public data breach

47 disclosed this week · 26,367 on record

Blue Shield of California

Disclosed Oct 27, 20211,519 affectedConfirmed

Official notice

Blue Shield of California, the covered entity (CE), reported that its business associate (BA) experienced a ransomware attack that compromised the protected health information (PHI) of 1,519 individuals. The PHI involved included names, dates of birth, and Social Security numbers. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. To mitigate the incident and prevent reoccurrence of a similar incident, the CE provided complimentary credit monitoring services and implemented additional administrative and technical safeguards to better protect sensitive data. OCR provided the CE with technical assistance regarding the importance of training and retraining after a security incident.

What is known

People affected1,519 (as reported to HHS)
DisclosedOct 27, 2021
HappenedAug 25, 2021
AttackHacking
Data exposedNamesHealth
SectorInsurance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Blue Shield of California

History of this record
sector2026-09-25
other to insuranceby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 1519by backfillSource
summary2026-09-25
empty to Blue Shield of California, the covered entity (CE), reported that its business associate (BA) experienced a ransomware attack that compromised the protected health information (PHI) of 1,519 individuals. The PHI involved included names, datby 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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