HackingHealthcareHealthcareData ExfiltratedTargetedPIIPHIIdentity (basic)MediumContained

Community Hospital of Anaconda

bd_b21460dfd81a982c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 12, 2024

Filed

May 19, 2025

To disclose

40 weeks

Affected

12,203state residents only

Linked

5 filings

Confidence

65%

Full breach record for Community Hospital of Anaconda →2 incidents on file

Community Hospital of Anaconda notified individuals of a data security incident discovered on August 12, 2024. Unauthorized access occurred between August 10-12, 2024, potentially exposing names and protected health information. The hospital engaged cybersecurity experts, notified the FBI, and offered credit monitoring services.

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Incident timeline

undetected · 2 days

discovery → filing · 40 weeks / 280 days

Aug 10, 2024

Begins

Aug 12, 2024

Discovered

May 19, 2025

Filed

vs. sector median

+27 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitemeowbd_9ec20b09bece6ce72024-09-30 · +230dVerified

Regulatory filings (3) · sorted by filing gap

New Hampshire State AGbd_73babd6817fd19492025-05-19Verified
HHS OCRbd_7b0652d2e93faddc2025-05-19Verified
Nebraska State AGbd_8c32d664856dbe6c2025-05-19Candidate

Name: Community Hospital of Anaconda
norm: community hospital of anaconda
Domain: communityhospitalofanaconda.org

Name: Community Hospital of Anaconda
norm: community hospital of anaconda
Domain: communityhospitalofanaconda.org
Industry: Healthcarellm

Discovered: Aug 12, 2024
Breach occurred: Aug 10, 2024 – Aug 12, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 19, 2025
Affected individuals: 12,203state-resident count only
Data types: PIIPHIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notified the Federal Bureau of Investigation

During the incident: Engaged leading cybersecurity experts to assist with an investigation
Notified the Federal Bureau of Investigation
Offering complimentary credit monitoring and identity theft protection services through IDX
Changes made: Implemented additional security features to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 40 weeks(280 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

New Hampshire State AGMay 19 · first

HHS OCRMay 19 · first

Nebraska State AGMay 19 · first

Montana State AGMay 19 · 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://dojmt.gov/wp-content/uploads/2025/12/Consumer-notification-letter-7.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 19, 2025
Raw hash: c06664551fdc92f3f8fc48c2b9716e1fe85b0a7fd0b4d0c380afcd33a8280fa9

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityCommunity Hospital of Anaconda

Victim entityCommunity Hospital of Anaconda

Incidentdiscovered Aug 12, 2024

Stated responseEngaged leading cybersecurity experts to assist with an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov