HackingFinancial ServicesFinanceData ExfiltratedIdentity (basic)Government IDFinancial accountMediumContained

CINFED FEDERAL CREDIT UNION

bd_f3b8d449ce3f05bf · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 25, 2023

Filed

Nov 9, 2023

To disclose

6 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

66%

Full breach record for CINFED FEDERAL CREDIT UNION →

Cinfed Federal Credit Union notified consumers of a data breach where an unauthorized third party accessed its internal network from Sept 22-25, 2023. The incident compromised names, Social Security numbers, and financial account numbers. Cinfed engaged forensic investigators, notified law enforcement, and offered one year of Experian IdentityWorks credit monitoring to affected individuals.

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Vermont clock⏱ VT AG >14 bday6 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 3 days

discovery → filing · 6 weeks / 45 days

Sep 22, 2023

Begins

Sep 25, 2023

Discovered

Nov 9, 2023

Filed

vs. sector median

3 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Montana State AGbd_038ba59a2ea65cbf2023-11-09Candidate
Maine State AGbd_1fe5ae06aa1948fc2023-11-09Candidate
Massachusetts State AGbd_f0d545f4ea56bb802023-11-09Verified

Name: CINFED FEDERAL CREDIT UNION
norm: cinfed federal credit union

Name: CINFED FEDERAL CREDIT UNION
norm: cinfed federal credit union
Industry: Financial Servicesllm

Discovered: Sep 25, 2023
Breach occurred: Sep 22, 2023 – Sep 25, 2023
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 9, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: External
Initial access: exploit_public_facing

During the incident: Initiated an internal investigation
Notified law enforcement
Engaged a forensic security firm to assist with our investigation and confirm the security of our computer systems
Offering a complimentary one-year membership of Experian IdentityWorks Credit 3B
Changes made: Assessing potential additional technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(45 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Montana State AGNov 9 · first

Maine State AGNov 9 · first

Massachusetts State AGNov 9 · first

Vermont State AGNov 9 · 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://ago.vermont.gov/document/2023-11-09-cinfed-federal-credit-union-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 9, 2023
Raw hash: 2f2cdd78f344a72aaa009eee804318c6e2c921ebcab278127a5c0c87031f31ec

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityCINFED FEDERAL CREDIT UNION

Victim entityCINFED FEDERAL CREDIT UNION

Incidentdiscovered Sep 25, 2023

Stated responseInitiated an internal investigation

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov