MalwareFinancial ServicesFinanceRansomwareData ExfiltratedTargetedIdentity (basic)Government IDFinancial accountMediumContained

ENERGY ONE FEDERAL CREDIT UNION

bd_936ce43cc05dd129 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 4, 2020

Filed

Aug 21, 2020

To disclose

11 weeks

Affected

9state residents only

Linked

3 filings

Confidence

66%

Full breach record for ENERGY ONE FEDERAL CREDIT UNION →2 incidents on file

Energy One Federal Credit Union notified members of a June 4, 2020 incident involving unauthorized file encryption (ransomware) and potential access to member data including names, addresses, SSNs, and financial account numbers. Forensic investigation was engaged, network secured, and credit monitoring offered.

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Incident timeline

discovery → filing · 11 weeks / 78 days

Jun 4, 2020

Begins

Jun 4, 2020

Discovered

Aug 21, 2020

Filed

vs. sector median

+3 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

California State AGbd_e46d62a8674a94102020-08-21Verified
Massachusetts State AGbd_eabc2c33ce97a7672020-08-21Verified

Name: ENERGY ONE FEDERAL CREDIT UNION
norm: energy one federal credit union

Name: ENERGY ONE FEDERAL CREDIT UNION
norm: energy one federal credit union
Industry: Financial Servicesllm

Discovered: Jun 4, 2020
Breach occurred: Jun 4, 2020
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 9state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Secured the network
Started a forensic investigation
Engaged Experian to offer complimentary one-year membership in Experian’s IdentityWorks
Changes made: Providing additional cybersecurity training to our employees
Taking steps to further enhance our existing security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(78 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

California State AGAug 21 · first

Massachusetts State AGAug 21 · first

Montana State AGAug 21 · 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/Energy-One-Federal-One-Credit-Union-Consumer-ltr.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 21, 2020
Raw hash: 76642070de2ca33fd261d7bbac99287c0a8976759bf3d173bfa86b14ed047cdc

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityENERGY ONE FEDERAL CREDIT UNION

Victim entityENERGY ONE FEDERAL CREDIT UNION

Incidentdiscovered Jun 4, 2020

Stated responseSecured the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov