Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsTargetedIdentity (basic)Government IDFinancial accountMediumResolved

Kansas City Credit Union

bd_d18a38aa16d4e44f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 11, 2022

Filed

Mar 2, 2023

To disclose

29 weeks

Affected

1state residents only

Confidence

65%

Full breach record for Kansas City Credit Union →

Kansas City Credit Union notified Montana residents of a data breach where an unauthorized third party accessed a single email account from August 10-11, 2022. The account contained names, DOBs, SSNs, driver's license numbers, and financial account numbers. KCCU secured the account, engaged forensic investigators, and offered one year of Experian IdentityWorks credit monitoring.

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Incident timeline

undetected · 1 days

discovery → filing · 29 weeks / 203 days

Aug 10, 2022

Begins

Aug 11, 2022

Discovered

Mar 2, 2023

Filed

vs. sector median

+21 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Kansas City Credit Union
norm: kansas city credit union

Name: Kansas City Credit Union
norm: kansas city credit union
Industry: Financial Servicesllm

Discovered: Aug 11, 2022
Breach occurred: Aug 10, 2022 – Aug 11, 2022
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Feb 27, 2023
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Secured the email account
Began an internal investigation
Engaged a forensic security firm to investigate and confirm the security of our email and computer systems
Offering a complimentary one-year membership of Experian IdentityWorks SM Credit 3B
Changes made: Enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(203 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-93.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 2, 2023
Raw hash: 0515809380d46b3ac72b0fc6979c4c1abc81c6c380c9f23fab84ac9fe21fdda6

Reporting entityKansas City Credit Union

Victim entityKansas City Credit Union

Incidentdiscovered Aug 11, 2022

Stated responseSecured the email account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov