MONTANAMalwareHealthcareHealthcareRansomwareBusiness Associate (HIPAA)Customer Data InvolvedData EncryptedRansom DemandedPHIHealth (basic)Identity (basic)Government IDHighContained

Advanced Care Hospital of Montana

bd_0d977ed5bbedefe2 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Apr 2, 2024

To disclose

—

Affected

2,331

Linked

2 filings

Confidence

68%

Full breach record for Advanced Care Hospital of Montana →4 incidents on file

Advanced Care Hospital of Montana reported to HHS on 2024-04-02 a Hacking/IT Incident affecting 2331 individuals. Breached information located on Network Server. The incident involved ransomware encrypting PHI including names, DOBs, SSNs, driver's license numbers, addresses, claims, medications, and diagnoses.

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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

Apr 2, 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 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Montana State AGbd_6e498a71aa89a9102024-03-29 · +4dVerified

Name: Advanced Care Hospital of Montana
norm: advanced care hospital of montana
Industry: Health Care Services

Name: Advanced Care Hospital of Montana
norm: advanced care hospital of montana
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 2,331nationwide
Data types: PHIHealth (basic)Identity (basic)Government ID
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare providerBusiness associate involved
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified HHS

During the incident: Offered free credit monitoring to affected individuals
Implemented additional administrative, technical, and security safeguards
Staff were also retrained in its requirements to protect and secure PHI
Changes made: Implemented additional administrative, technical, and security safeguards
Staff were also retrained in its requirements to protect and secure PHI
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 ↗

Montana State AGMar 29 · first

HHS OCR+4d · 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: Apr 2, 2024
Raw hash: 705bd053ef5979877718451009eeb367bc3afe3f39db9df66b27994a0d3e48f1

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

Regulatory filings (1) · sorted by filing gap

Reporting entityAdvanced Care Hospital of Montana

Victim entityAdvanced Care Hospital of Montana

IncidentUnauthorized Access

Stated responseOffered free credit monitoring to affected individuals

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing