Social EngineeringHealthcareGovernmentHealthcarePhishingCustomer Data InvolvedEmployee Data InvolvedDelayed DiscoveryIdentity (basic)Government IDPHIHealth (basic)Financial accountEducationMediumContained

County of Los Angeles Department of Mental Health

bd_1f2f89a6c37be2dc · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 19, 2021

Filed

Apr 20, 2022

To disclose

26 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

66%

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

Los Angeles County Department of Mental Health experienced a phishing incident on October 19, 2021, where three employee email accounts were compromised via malicious links. The incident potentially exposed personal information including names, addresses, SSNs, driver's licenses, medical/health information, and financial account numbers. The organization notified law enforcement, reset credentials, and deployed additional security measures. Notification was delayed at the request of law enforcement.

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Incident timeline

undetected · 1 days

discovery → filing · 26 weeks / 183 days

Oct 18, 2021

Begins

Oct 19, 2021

Discovered

Apr 20, 2022

Filed

vs. sector median

+14 wks slower

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

HHS OCRbd_a7d22247c37f34fb2022-04-20Verified

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

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

Discovered: Oct 19, 2021
Breach occurred: Oct 18, 2021
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDPHIHealth (basic)Financial accountEducation
Data elements: Social Security numberDate of birth
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Regulator citations: Notified law enforcement authoritiesReporting this incident to the U.S. Department of Health & Human Services Office of Civil Rights
Initial access: phishing_link

During the incident: Began an internal investigation into the attack
Notified law enforcement authorities
Deployed additional security measures
Resetting all network credentials
Reporting this incident to the U.S. Department of Health & Human Services Office of Civil Rights
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 weeks(183 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

HHS OCRApr 20 · first

California State AGApr 20 · first · 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://oag.ca.gov/ecrime/databreach/reports/sb24-552740
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 20, 2022
Raw hash: 2777558d6be0e06463c6f7dc4d1e2234d59f4d68cc21c3e24d4067853cf9270c

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

Incidentdiscovered Oct 19, 2021

Stated responseBegan an internal investigation into the attack

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov