CALIFORNIASocial EngineeringHealthcareGovernmentHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)Financial accountAuthenticationHighResolved

Sierra County Department of Public Health

bd_0b5fad75e12c5fb1 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Nov 22, 2023

To disclose

—

Affected

2,463

Confidence

97%

Full breach record for Sierra County Department of Public Health →

Sierra County Department of Public Health, Department of Behavioral Health (CA) reported to HHS on 2023-11-22 a Hacking/IT Incident affecting 2,463 individuals. Several employees were subjects of an email phishing attack. PHI exposed included names, email, phone numbers, tax IDs, SSNs, dates of birth, driver's license/government IDs, health insurance information, medications, and financial information. The CE notified HHS, affected individuals, and media, provided credit monitoring, and implemented enhanced safeguards and staff retraining.

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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

Nov 22, 2023

Filed

—

No filing yet · watching

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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2,463 affectedView incident

Name: Sierra County Department of Public Health
norm: sierra county department of public health
Industry: Health Care Services

Name: Sierra County Department of Public Health
norm: sierra county department of public health
Industry: Health Care Services
Industry: Healthcaresource defaultGovernmentllm

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 2,463nationwide
Data types: Identity (basic)Government IDHealth (basic)Financial accountAuthentication
HHS breach type: Hacking / IT incident
Where the data lived: Email
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 affected individuals
Media notification and substitute notice provided
Provided complimentary credit monitoring services
Implemented additional administrative, technical, and security safeguards
Staff retrained on email security precautions
Changes made: Additional administrative, technical, and security safeguards implemented
Staff email security retraining
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.

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: Nov 22, 2023
Raw hash: 359a003e0290feb3ee4d530c8f224db32830a0a871678f14211c8bd588ffd2cc

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Reporting entitySierra County Department of Public Health

Victim entitySierra County Department of Public Health

IncidentUnauthorized Access

Stated responseNotified affected individuals

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing