NEW YORKHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)Government IDFinancial accountHighContained

Seneca Nation Health System

bd_a2a46be1176a1b6c · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Sep 6, 2024

To disclose

—

Affected

16,879

Linked

3 filings

Confidence

69%

Full breach record for Seneca Nation Health System →2 incidents on file

Seneca Nation Health System reported to HHS on 2024-09-06 a Hacking/IT Incident affecting 16,879 individuals. Breached information located on Network Server. The incident involved PHI including names, DOB, SSN, driver's license, financial, and treatment data. The entity provided credit monitoring and implemented additional safeguards.

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Leak gap clock⏱ Leak >90d

⚠ 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

Sep 6, 2024

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 3 about the same incident.View merged incident

A leak claim by inc_ransom about this victim predates this filing by 124 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteinc_ransombd_480883f4d89309db2024-05-05 · +124dCandidate

Regulatory filings (1) · sorted by filing gap

Montana State AGbd_a2f20bb3ea4128022024-09-06Verified

Name: Seneca Nation Health System
norm: seneca nation health system
Domain: senecahealth.org
Industry: Health Care Services

Name: Seneca Nation Health System
norm: seneca nation health system
Domain: senecahealth.org
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 16,879nationwide
Data types: PHIHealth (basic)Identity (basic)Government IDFinancial account
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: notified HHS

During the incident: Provided complimentary credit monitoring services to the affected individuals
Implemented additional administrative, technical, and security safeguards to better protect its PHI
Changes made: Implemented additional administrative, technical, and security safeguards to better protect its PHI
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90dHHS 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 · 2 states

View merged incident ↗

Montana State AGSep 6 · first

HHS OCRSep 6 · 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://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: Sep 6, 2024
Raw hash: d2f7d6ea98f7dfc6b826c9d42ed42241daa4d5734fb095cbff1585cfcc7ba4d1

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

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Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entitySeneca Nation Health System

Victim entitySeneca Nation Health System

IncidentUnauthorized Access

Stated responseProvided complimentary credit monitoring services to the affected individuals

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing