MalwareFinancial ServicesFinanceRansomwareData ExfiltratedData EncryptedIdentity (basic)Government IDFinancial accountMediumContained

Appalachian Community Federal Credit Union

bd_87f56850debb236e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 7, 2025

Filed

Dec 30, 2025

To disclose

12 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

67%

Full breach record for Appalachian Community Federal Credit Union →

Appalachian Community Federal Credit Union notified consumers of a data event discovered on October 7, 2025. The incident involved unauthorized access to its network, resulting in the exfiltration of files containing names, Social Security numbers, and financial account information. The Credit Union took its network offline, engaged forensic specialists, reset passwords, and reported the incident to federal law enforcement. Affected individuals are offered credit monitoring services.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday12 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

discovery → filing · 12 weeks / 84 days

Oct 7, 2025

Discovered

Dec 30, 2025

Filed

vs. sector median

+3 wks slower

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

Nebraska State AGbd_5928e5e1e3fe7db02025-12-30Verified
Indiana State AGbd_5c231de9fb96a0402025-12-30Verified
Massachusetts State AGbd_6db69dbddb9c6bb72025-12-31 · +1dVerified

Name: Appalachian Community Federal Credit Union
norm: appalachian community federal credit union

Name: Appalachian Community Federal Credit Union
norm: appalachian community federal credit union
Industry: Financial Servicesllm

Discovered: Oct 7, 2025
Materiality determined: —
Notification sent: Dec 30, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: reported the incident to federal law enforcement

During the incident: Took our network offline
Partnered with forensic specialists to investigate
Reset user passwords
Reported the incident to federal law enforcement
Changes made: Reviewing existing security controls, policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(84 days from discovery to filing)
Compliance flags: VT AG >45 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 ↗

Nebraska State AGDec 30 · first

Indiana State AGDec 30 · first

Vermont State AGDec 30 · first · this page

Massachusetts State AG+1d

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/2025-12-30-appalachian-community-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: Dec 30, 2025
Raw hash: 38bddcc3d18a690381a5510566e65ac2cc9880c18b99fb570ff6cfbd6d7a6bb7

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityAppalachian Community Federal Credit Union

Victim entityAppalachian Community Federal Credit Union

Incidentdiscovered Oct 7, 2025

Stated responseTook our network offline

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov