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California Department of Corrections and Rehabilitation

Disclosed Feb 8, 20224 years ago236,000 affectedConfirmed

Official notice

The covered entity (CE), the California Department of Corrections and Rehabilitation, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 236,000 individuals. The PHI involved included names, Social Security numbers, dates of birth, driver’s license numbers, diagnoses, lab results, medications, financial information, and other treatment information. Upon discovering the breach, the CE took steps to secure its network and investigated the breach incident. The CE notified HHS, affected individuals, and the media. It also implemented additional administrative, technical, and security safeguards. As part of the investigation, OCR provided technical assistance to the CE regarding the HIPAA Rules.

What is known

People affected236,000 (as reported to HHS)
DisclosedFeb 8, 2022
HappenedDec 21, 2021
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
California AGresidents of CAFeb 8, 2022
California AGresidents of CAAug 22, 2022
HHS archivetotalAug 22, 2022236,000

Other breaches at California Department of Corrections and Rehabilitation

BreachAffected
Disclosed Jul 14, 2020Jul 14, 20206 years agoUnknown
Disclosed Dec 26, 2017Dec 26, 20178 years agoUnknown
Disclosed Nov 21, 2016Nov 21, 20169 years agoUnknown
Disclosed Jul 13, 2015Jul 13, 201511 years agoUnknown
Disclosed Aug 20, 2013Aug 20, 201313 years agoUnknown
Disclosed Nov 1, 2012Nov 1, 201213 years agoUnknown
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 236000 · backfill source
  • 2026-09-25 · summary: empty to The covered entity (CE), the California Department of Corrections and Rehabilitation, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 236,000 individuals. The PHI involved included na · backfill source
  • 2026-09-25 · disclosed: 2022-08-22 to 2022-02-08 · 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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