Social EngineeringHealthcareGovernmentHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Health (basic)PHILowContained

Los Angeles County - Department of Health Services

bd_f483ba0f0ae3054a · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Apr 25, 2024

To disclose

—

Affected

Not disclosed

Confidence

66%

Los Angeles County Department of Health Services experienced a phishing attack between February 19-20, 2024, where hackers obtained login credentials for 23 employee email accounts via malicious links. Compromised data included names, dates of birth, addresses, phone numbers, email addresses, medical record numbers, and health information (diagnoses, treatments, medications). SSNs and financial information were not involved. DHS disabled accounts, reset devices, blocked phishing sites, and notified law enforcement and regulators (CDPH, HHS OCR).

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Incident timeline

Feb 19, 2024

Begins

Apr 25, 2024

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Los Angeles County - Department of Health Services
norm: los angeles county department of health services
Domain: dhs.lacounty.gov

Name: Los Angeles County - Department of Health Services
norm: los angeles county department of health services
Domain: dhs.lacounty.gov
Industry: HealthcarellmGovernmentllm

Discovered: —
Breach occurred: Feb 19, 2024 – Feb 20, 2024
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Health (basic)PHI
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified the California Department of Public HealthNotified the U.S. Department of Health & Human Services’ Office for Civil RightsCooperating with law enforcement on this matter
Initial access: phishing_link

During the incident: Disabled the impacted e-mail accounts
Reset and re-imaged the user’s device(s)
Blocked websites that were identified as part of the phishing campaign
Quarantined all suspicious incoming e-mails
Distributed awareness notifications to all DHS workforce members
Notified law enforcement upon discovery of the phishing attack
Initiated an administrative review
Implemented additional controls to minimize the risk of future phishing attacks
Enhanced training to identify and respond to phishing attacks
Notified the California Department of Public Health
Notified the U.S. Department of Health & Human Services’ Office for Civil Rights
Changes made: Implemented numerous enhancements to reduce exposure to similar e-mail attacks
Implemented additional controls to minimize the risk of future phishing attacks
Enhanced training to identify and respond to phishing attacks as part of the ongoing cyber-security awareness program
Continues to strengthen its information privacy and security program to implement safeguards to prevent and/or reduce cyber-attacks
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/sb24-584405
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 25, 2024
Raw hash: 4a05405fb9f56a0b61b81186814e7b5be4f6128dd4b93eb994ba47c69c31531e

Reporting entityLos Angeles County - Department of Health Services

Victim entityLos Angeles County - Department of Health Services

IncidentPhishing

Stated responseDisabled the impacted e-mail accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov