HackingProfessional ServicesProfessional ServicesStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumActive

Lemhi Frontier, LLC

bd_090283b425ceda6f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 15, 2024

Filed

Dec 10, 2024

To disclose

17 weeks

Affected

19state residents only

Confidence

65%

Full breach record for Lemhi Frontier, LLC →

Lemhi Frontier, LLC notified individuals of unauthorized access to computer systems between August 13-15, 2024. Suspicious activity was identified on August 15, 2024. Files were copied by an unauthorized actor. Affected data includes names, payroll info, SSNs, financial account info, and government IDs. The company secured the network, investigated, and is offering 12 months of credit monitoring via TransUnion.

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Incident timeline

undetected · 2 days

discovery → filing · 17 weeks / 117 days

Aug 13, 2024

Begins

Aug 15, 2024

Discovered

Dec 10, 2024

Filed

vs. sector median

2 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed19 affectedView incident

Name: Lemhi Frontier, LLC
norm: lemhi frontier

Name: Lemhi Frontier, LLC
norm: lemhi frontier
Industry: Professional Servicesllm

Discovered: Aug 15, 2024
Breach occurred: Aug 13, 2024 – Aug 15, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 10, 2024
Affected individuals: 19state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Promptly took steps to secure the network
Launched an investigation into the nature and scope of the activity
Offering you access to complimentary credit monitoring and identity theft protection services for twelve months, through TransUnion
Changes made: Reviewing existing security polices
Implemented additional security measures to further protect against similar incidents moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(117 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/2025/03/Consumer-notification-letter-34.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 10, 2024
Raw hash: 5f3cc5988f2cc948da5bedb0758440cd2612c0908439e62f312884f8702f2c66

Reporting entityLemhi Frontier, LLC

Victim entityLemhi Frontier, LLC

Incidentdiscovered Aug 15, 2024

Stated responsePromptly took steps to secure the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov