UnknownFinanceGovernment IDFinancial accountPCIMedium

MemberSource Credit Union

bd_c53f2485178b1a20 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

May 8, 2026

To disclose

—

Affected

5state residents only

Linked

8 filings

Confidence

95%

Full breach record for MemberSource Credit Union →

MemberSource Credit Union reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-05-08. The reporting organization type is Financial Services. 5 Vermont residents were affected. Categories of data breached: Social Security Numbers, Financial Account Codes, Credit or Debit Account Info.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

May 8, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 8 about the same incident.View merged incident

A leak claim by safepay about this victim predates this filing by 339 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitesafepaybd_b2fc6079fb9d7fa02025-06-03 · +339dVerified by operator

Regulatory filings (6) · sorted by filing gap

Massachusetts State AGbd_9aa063fac94e3ba32026-05-08Verified
California State AGbd_9db84dbb566e334a2026-05-08Verified
Nebraska State AGbd_1368db5c6ffe857e2026-05-07 · +1dVerified by operator
Indiana State AGbd_61c95d24c3f146972026-05-07 · +1dVerified

Show 2 more filings ↓up to 3d gap

Texas State AGbd_aa1e8bc975a47fba2026-05-11 · +3dVerified
Montana State AGbd_1fa68433c68e29442026-05-05 · +3dCandidate

Name: MemberSource Credit Union
norm: membersource credit union
Domain: membersourcecu.org

Name: MemberSource Credit Union
norm: membersource credit union
Domain: membersourcecu.org

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 5state-resident count only
Data types: —
Data elements: Social Security numberFinancial account numberPayment card number
Attack vector: Unknown

Compliance flags: Leak >180d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Montana State AGMay 5 · first

Nebraska State AG+2d

Indiana State AG+2d

Massachusetts State AG+3d

California State AG+3d

Vermont State AG+3d · this page

Texas State AG+6d

Pattern: first filing May 5 (MT), last May 11 (TX) — a 6-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/categories/security-breach-notices
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 8, 2026
Raw hash: c96e775dfa1bf6b676bb357df4c154e8c1c3c05347a5882e76d6946fe67e93a7

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entityMemberSource Credit Union

Victim entityMemberSource Credit Union

IncidentUnknown

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov