HackingHealthcareHealthcareStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Highland Health Systems

bd_ab87bef375b26551 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 3, 2023

Filed

Jun 13, 2024

To disclose

49 weeks

Affected

8state residents only

Linked

6 filings

Confidence

66%

Full breach record for Highland Health Systems →2 incidents on file

Highland Health Systems notified Montana residents of a data breach detected on July 3, 2023, involving unauthorized access to personal information. The company engaged forensic investigators, secured the network, and provided credit monitoring services. The investigation concluded in May 2024.

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Incident timeline

discovery → filing · 49 weeks / 346 days

Jul 3, 2023

Discovered

Jun 13, 2024

Filed

vs. sector median

+37 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_1cfb9778412976052024-06-13Verified
Maine State AGbd_c07713e459f2d0472024-06-13Candidate
Indiana State AGbd_e1fec07cf605cbdd2024-06-13Verified
New Hampshire State AGbd_b522f6b3dfb7f0d02024-06-17 · +4dVerified

Show 1 more filing ↓up to 5d gap

Idaho State AGbd_c020ae850587c7992024-06-18 · +5dVerified

Name: Highland Health Systems
norm: highland health

Name: Highland Health Systems
norm: highland health
Industry: Healthcarellm

Discovered: Jul 3, 2023
Materiality determined: —
Notification sent: Jun 13, 2024
Affected individuals: 8state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Disconnected all access to the network
Engaged a specialized third-party cybersecurity firm to assist with securing the environment
Conducted a comprehensive forensic investigation
Changed administrative credentials
Restored operations in a safe and secure mode
Implemented security monitoring software
Adopted new encryption technologies
Deployed additional NIST-compliant technical safeguards
Revised policies and procedures
Retrained workforce members
Engaged a third-party notice vendor to assist with the mailings, call center, and provide identity theft protection services
Changes made: Implemented security monitoring software
Adopted new encryption technologies
Deployed additional NIST-compliant technical safeguards
Revised policies and procedures
Retrained workforce members
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 49 weeks(346 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Massachusetts State AGJun 13 · first

Maine State AGJun 13 · first

Indiana State AGJun 13 · first

Montana State AGJun 13 · first · this page

New Hampshire State AG+4d

Idaho State AG+5d

Pattern: first filing Jun 13 (MA), last Jun 18 (ID) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/OCP/Consumer-notification-letter-1474.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 13, 2024
Raw hash: bc6574603511e5bc55615b3681b1df0420d577f0a23d266e900e348da1aa4db2

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHighland Health Systems

Victim entityHighland Health Systems

Incidentdiscovered Jul 3, 2023

Stated responseDisconnected all access to the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov