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County of Los Angeles Department of Mental Health

Disclosed Dec 22, 20232 years ago2,334 affectedConfirmed

Official notice

The covered entity (CE), County of Los Angeles Department of Mental Health, reported that an employee was the target of an email phishing attack that compromised the protected health information (PHI) of 2,334 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, and other treatment information. The CE notified HHS, affected individuals, and the media. In response to the breach the CE implemented additional technical safeguards and retrained workforce members to better protect its PHI.

What is known

People affected2,334 (as reported to HHS)
DisclosedDec 22, 2023
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
HHS archivetotalDec 22, 20231,284
HHS archivetotalMar 22, 20241,408
HHS archivetotalMay 20, 20241,598
HHS archivetotalSep 5, 20242,334

Other breaches at County of Los Angeles Department of Mental Health

BreachAffected
Disclosed Apr 20, 2022Apr 20, 20224 years agoHacking5,129
History of this record
  • 2026-09-25 · disclosed: 2024-03-22 to 2023-12-22 · backfill source
  • 2026-09-25 · disclosed: 2024-05-20 to 2024-03-22 · backfill source
  • 2026-09-25 · disclosed: 2024-09-05 to 2024-05-20 · backfill source
  • 2026-09-25 · added · backfill source

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

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