HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Credit Union West

bd_be8ab0e9aa15e870 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 23, 2021

Filed

Feb 22, 2022

To disclose

9 weeks

Affected

2state residents only

Linked

2 filings

Confidence

66%

Full breach record for Credit Union West →

Credit Union West notified Montana residents of a data security incident on December 23, 2021, where an unknown third party gained unauthorized access to a financial advisor's computer system for approximately one hour. The incident potentially exposed names, addresses, and Social Security numbers or driver's license numbers. No data was removed, and no misuse was confirmed. Credit Union West secured the system, engaged third-party IT experts, and offered one year of complimentary credit monitoring.

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Incident timeline

discovery → filing · 9 weeks / 61 days

Dec 23, 2021

Begins

Dec 23, 2021

Discovered

Feb 22, 2022

Filed

vs. sector median

on median

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

Massachusetts State AGbd_f025ff5c1e81bc9c2022-02-21 · +1dVerified

Name: Credit Union West
norm: credit union west

Name: Credit Union West
norm: credit union west
Industry: Financial Servicesllm

Discovered: Dec 23, 2021
Breach occurred: Dec 23, 2021 – Dec 23, 2021
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Secured the system and shut it down
Retained third-party IT experts to investigate this incident
Implemented enhanced security measures
Changes made: Implemented enhanced security measures to help prevent this type of incident from recurring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(61 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 ↗

Massachusetts State AGFeb 21 · first

Montana State AG+1d · 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/OCP/Consumer-Notification-Letter-235.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 22, 2022
Raw hash: 2f1124dca5db154bb10dae434cd2a5d16e9ad965869784cf87ccc491fbf84811

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCredit Union West

Victim entityCredit Union West

Incidentdiscovered Dec 23, 2021

Stated responseSecured the system and shut it down

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov