HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Tri-State Tax & Accounting

bd_aa72ab142dcf4c24 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 8, 2021

Filed

Jul 27, 2021

To disclose

7 weeks

Affected

3state residents only

Confidence

66%

Full breach record for Tri-State Tax & Accounting →

Tri-State Tax & Accounting notified Montana residents that on June 8, 2021, an unauthorized person accessed its network, potentially exposing names, SSNs, and banking info. The company engaged forensic investigators, reported to law enforcement, and offered 12 months of credit monitoring via IDX.

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Incident timeline

discovery → filing · 7 weeks / 49 days

Jun 8, 2021

Discovered

Jul 27, 2021

Filed

vs. sector median

13 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: Tri-State Tax & Accounting
norm: tri state tax accounting

Name: Tri-State Tax & Accounting
norm: tri state tax accounting
Industry: Professional Servicesllm

Discovered: Jun 8, 2021
Materiality determined: —
Notification sent: Jul 27, 2021
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Reported to law enforcement
Initial access: valid_credentials

During the incident: Retained a computer security firm to assist in our investigation
Reported the incident to law enforcement
Reviewed computer security to identify areas for improvement
Evaluating internal policies and procedures
Arranged for identity theft protection services through IDX
Changes made: Reviewed computer security to identify areas for improvement
Evaluating internal policies and procedures to identify areas of potential improvement
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(49 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/OCP/notificationLetter-27.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 27, 2021
Raw hash: 1e6569e14a0baa12fbd34ec5067a960eeee35a34dddd832ad0971ed39e99f2ba

Reporting entityTri-State Tax & Accounting

Victim entityTri-State Tax & Accounting

Incidentdiscovered Jun 8, 2021

Stated responseRetained a computer security firm to assist in our investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov