County of Los Angeles Department of Mental Health
Disclosed Dec 22, 20232 years ago2,334 affectedConfirmed
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 affected | 2,334 (as reported to HHS) |
|---|---|
| Disclosed | Dec 22, 2023 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): County of Los Angeles Department of Mental Health (Healthcare Provider, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Dec 22, 2023 | 1,284 |
| HHS archivetotal | Mar 22, 2024 | 1,408 |
| HHS archivetotal | May 20, 2024 | 1,598 |
| HHS archivetotal | Sep 5, 2024 | 2,334 |
Other breaches at County of Los Angeles Department of Mental Health
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Disclosed Apr 20, 2022Apr 20, 20224 years agoHacking | Apr 20, 20224 years ago | Hacking | Healthcare | Confirmed | 5,129 |
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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