Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsTargetedPIIIdentity (basic)LowContained

Community First Credit Union

bd_c03478c2c640c419 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 7, 2023

Filed

May 3, 2024

To disclose

34 weeks

Affected

59state residents only

Confidence

66%

Full breach record for Community First Credit Union →3 incidents on file

Community First Credit Union notified Montana residents of a data incident where an unauthorized actor accessed an employee's email account between Sept 6-7, 2023, likely via phishing. The actor viewed PII (names) in an attempt to commit financial fraud, which was blocked. No evidence of identity theft was found. The company engaged forensic experts and offered credit monitoring.

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Incident timeline

undetected · 1 days

discovery → filing · 34 weeks / 239 days

Sep 6, 2023

Begins

Sep 7, 2023

Discovered

May 3, 2024

Filed

vs. sector median

+26 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed59 affectedView incident

Name: Community First Credit Union
norm: community first credit union

Name: Community First Credit Union
norm: community first credit union
Industry: Financial Servicesllm

Discovered: Sep 7, 2023
Breach occurred: Sep 6, 2023 – Sep 7, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 59state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Blocked any further attempts to access the account
Engaged third-party cybersecurity experts to conduct an investigation
Engaged third-party forensic and legal experts to assist in the investigation
Changes made: Further secure our systems
Carefully review and further enhance these protections
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 34 weeks(239 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/Consumer-notification-letter-1337.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 3, 2024
Raw hash: 8316361d37d09c23f5c3d82c0aaa69e419701e572af1a4b6ad384bf8d429a593

Reporting entityCommunity First Credit Union

Victim entityCommunity First Credit Union

Incidentdiscovered Sep 7, 2023

Stated responseBlocked any further attempts to access the account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov