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California Physicians' Service

Disclosed Apr 13, 20188 years ago18,416 affectedConfirmed

Official notice

The covered entity (CE), Blue Shield of California, reported that its business associate (BA) Sharecare Health Data Services, LLC, was the victim of a cyber-attack affecting the protected health information (PHI) of 18,416 individuals. The PHI involved included names, dates of birth, Social Security numbers, and clinical information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. Affected individuals were also provided complimentary credit monitoring services.

What is known

People affected18,416 (as reported to HHS)
DisclosedApr 13, 2018
HappenedMay 22, 2018
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
California AGresidents of CAApr 13, 2018
HHS archivetotalApr 13, 20181,717
California AGresidents of CAFeb 15, 2019
HHS archivetotalFeb 15, 201918,416

Other breaches at California Physicians' Service

BreachAffected
Disclosed Nov 17, 2023Nov 17, 20232 years agoHacking637K
Disclosed Jun 5, 2015Jun 5, 201511 years agoInsider843
History of this record
  • 2026-09-25 · attack: unknown to hacking · backfill source
  • 2026-09-25 · data_types: [] to ["names","health"] · backfill source
  • 2026-09-25 · records_basis: empty to hhs · backfill source
  • 2026-09-25 · records: empty to 18416 · backfill source
  • 2026-09-25 · summary: empty to The covered entity (CE), Blue Shield of California, reported that its business associate (BA) Sharecare Health Data Services, LLC, was the victim of a cyber-attack affecting the protected health information (PHI) of 18,416 individuals. The · backfill source
  • 2026-09-25 · disclosed: 2019-02-15 to 2018-04-13 · backfill source
  • 2026-09-25 · added · backfill source

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

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