HackingProfessional ServicesProfessional ServicesTargetedIdentity (basic)LowContained

Chong Nishimoto Sia Nakamura & Goya, LLLP

bd_f3b9e3abf2cf12ea · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 9, 2024

Filed

Dec 5, 2024

To disclose

17 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for Chong Nishimoto Sia Nakamura & Goya, LLLP →

Chong, Nishimoto, Sia, Nakamura & Goya, LLLP notified Montana residents of a cybersecurity incident discovered on August 9, 2024. An unknown individual gained access to systems, potentially acquiring names and other PII. The firm secured systems, engaged forensic specialists, notified law enforcement, and offered 12 months of credit monitoring via Experian.

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Incident timeline

discovery → filing · 17 weeks / 118 days

Aug 9, 2024

Begins

Aug 9, 2024

Discovered

Dec 5, 2024

Filed

vs. sector median

1 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Maine State AGbd_6beac918145f43272024-12-05Candidate

Name: Chong Nishimoto Sia Nakamura & Goya, LLLP
norm: chong nishimoto sia nakamura goya lllp

Name: Chong Nishimoto Sia Nakamura & Goya, LLLP
norm: chong nishimoto sia nakamura goya lllp
Industry: Professional Servicesllm

Discovered: Aug 9, 2024
Breach occurred: Aug 9, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 5, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement

During the incident: Further secured our systems
Launched an investigation with third party forensic specialists
Notified federal law enforcement of this incident
Offering you complimentary access to 12 months of credit monitoring and identity theft restoration services, through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(118 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Maine State AGDec 5 · first

Montana State AGDec 5 · 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/2025/03/Consumer-notification-letter-11.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 5, 2024
Raw hash: 4ea138d2eeaac8e87313d91cb20fdc1feb42ce80c98d9f405214413121f2917a

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityChong Nishimoto Sia Nakamura & Goya, LLLP

Victim entityChong Nishimoto Sia Nakamura & Goya, LLLP

Incidentdiscovered Aug 9, 2024

Stated responseFurther secured our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov