HackingFinancial ServicesFinanceStolen CredentialsMulti-Stage ChainData ExfiltratedPIIIdentity (basic)Government IDMediumContained

OE Federal Credit Union

bd_195ac9680f382b80 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 28, 2023

Filed

Apr 30, 2024

To disclose

26 weeks

Affected

608state residents only

Linked

7 filings

Confidence

65%

Full breach record for OE Federal Credit Union →

OE Federal Credit Union notified Montana residents of a cybersecurity incident detected on October 28, 2023. Unauthorized access occurred between August 19 and October 29, 2023, potentially exposing personal information. The credit union engaged external forensic investigators and is offering complimentary Experian IdentityWorks membership to affected individuals.

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Incident timeline

undetected · 70 days

discovery → filing · 26 weeks / 185 days

Aug 19, 2023

Begins

Oct 28, 2023

Discovered

Apr 30, 2024

Filed

vs. sector median

+17 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitenoescapebd_2e8f0cb16e6f197e2023-10-29 · +184dVerified by operator

Regulatory filings (5) · sorted by filing gap

California State AGbd_13ffb6f7f84418cf2024-04-30Verified
Washington State AGbd_5e779dd08ad7d7682024-04-30Verified
Vermont State AGbd_a89563f40ff808812024-04-30Verified
Massachusetts State AGbd_b1c4697aae04f1c02024-04-30Verified

Show 1 more filing ↓up to 2d gap

Oregon State AGbd_6c93b213b362f4682024-05-02 · +2dVerified

Name: OE Federal Credit Union
norm: oe federal credit union
Domain: oefederal.org

Name: OE Federal Credit Union
norm: oe federal credit union
Domain: oefederal.org
Industry: Financial Servicesllm

Discovered: Oct 28, 2023
Breach occurred: Aug 19, 2023 – Oct 29, 2023
Undetected for: 70 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 608state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Began efforts to secure our network
Commenced a prompt and thorough investigation
Working very closely with external cybersecurity professionals
Providing you with access to a complimentary membership of Experian IdentityWorks
Changes made: Continually evaluates and modifies its practices and internal controls to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 weeks(185 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

California State AGApr 30 · first

Washington State AGApr 30 · first

Vermont State AGApr 30 · first

Massachusetts State AGApr 30 · first

Montana State AGApr 30 · first · this page

Oregon State AG+2d

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-1323.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 30, 2024
Raw hash: f970bcf1aae72a39fbe351ddcaeb0e0f06290e5593faa24b86aafca26cd1d34e

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityOE Federal Credit Union

Victim entityOE Federal Credit Union

Incidentdiscovered Oct 28, 2023

Stated responseBegan efforts to secure our network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov