CALIFORNIASocial EngineeringHealthcareGovernmentHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)HighResolved

County of Los Angeles Department of Mental Health

bd_99d02371dc2eb513 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Dec 22, 2023

To disclose

—

Affected

1,284

Linked

2 filings

Confidence

97%

Full breach record for County of Los Angeles Department of Mental Health →7 incidents on file

County of Los Angeles Department of Mental Health reported to HHS on 2023-12-22 a Hacking/IT Incident affecting 1,284 individuals. An employee was targeted by an email phishing scheme that compromised PHI stored on a network server. Exposed data included names, addresses, dates of birth, Social Security numbers, and treatment information. The CE notified affected individuals, the media, and HHS, provided substitute notice and credit monitoring, and retrained staff on email security.

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HIPAA clock✓ HHS notified

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Dec 22, 2023

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

California State AGbd_4bcc01e8c8693b4b2023-12-21 · +1dVerified by operator

Name: County of Los Angeles Department of Mental Health
norm: county of los angeles department of mental health
Industry: Health Care Services

Name: County of Los Angeles Department of Mental Health
norm: county of los angeles department of mental health
Industry: Health Care Services
Industry: Healthcaresource defaultGovernmentllm

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 1,284nationwide
Data types: Identity (basic)Government IDHealth (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1566 PhishingT1078 Valid Accounts
Threat actor: External
Regulator citations: HHS OCR notified
Initial access: phishing_link

During the incident: Notified HHS
Notified affected individuals
Notified media
Provided substitute notice
Provided complimentary credit monitoring services
Implemented additional administrative, technical, and security safeguards
Retrained staff on email security
Changes made: Additional administrative safeguards implemented
Additional technical safeguards implemented
Additional security safeguards implemented
Staff retrained on email security
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

California State AGDec 21 · first

HHS OCR+1d · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Dec 22, 2023
Raw hash: c50ced6f17f2ed779f990318cca71e8a034dd30efaac41f98e9000f9ea931391

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Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCounty of Los Angeles Department of Mental Health

Victim entityCounty of Los Angeles Department of Mental Health

IncidentUnauthorized Access

Stated responseNotified HHS

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing