Social EngineeringHealthcareTechnologyHealthcarePhishingStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Montana Health Solutions

bd_22c923595b49da63 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 17, 2024

Filed

Mar 28, 2025

To disclose

27 weeks

Affected

481state residents only

Linked

4 filings

Confidence

66%

Full breach record for Montana Health Solutions →2 incidents on file

Montana Health Solutions notified individuals of a data security incident discovered on September 17, 2024, involving unauthorized access to an employee email account. The incident likely exposed personal information of individuals receiving in-home care assistance. MHS offered 12 months of Experian IdentityWorks.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 27 weeks / 192 days

Sep 17, 2024

Discovered

Mar 28, 2025

Filed

vs. sector median

+16 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_1d05605e93872b112025-03-31 · +3dVerified
Washington State AGbd_4457d4f238e51c9b2025-03-31 · +3dVerified
Indiana State AGbd_e55b2edbe416bfd32025-03-25 · +3dVerified

Name: Montana Health Solutions
norm: montana health

Name: Montana Health Solutions
norm: montana health
Industry: HealthcarellmTechnologyllm

Discovered: Sep 17, 2024
Materiality determined: —
Notification sent: Jan 8, 2025
Affected individuals: 481state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Took steps to investigate
Performed a thorough review of our systems
Implemented additional security measures to protect our digital environment
Provided notification to the companies we work with
Offered complimentary access to Experian IdentityWorks for 12 months
Changes made: Implemented additional security measures to protect our digital environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(192 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 · 4 states

View merged incident ↗

Indiana State AGMar 25 · first

Montana State AG+3d · this page

Massachusetts State AG+6d

Washington State AG+6d

Pattern: first filing Mar 25 (IN), last Mar 31 (WA) — a 6-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/2025/08/Consumer-notification-letter.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 28, 2025
Raw hash: 394874b9256ea6481c8507e95ab82dfbc28152e2b89e2c15108c0f965950f0d9

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMontana Health Solutions

Victim entityMontana Health Solutions

Incidentdiscovered Sep 17, 2024

Stated responseTook steps to investigate

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov