UnknownFinancial ServicesFinanceCustomer Data InvolvedFinancialFinancial accountIdentity (basic)Government IDPIIMediumContained

Guardian Credit Union

bd_7abdcc24dd29bb65 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Aug 6, 2026

To disclose

—

Affected

9state residents only

Linked

2 filings

Confidence

67%

Full breach record for Guardian Credit Union →

Guardian Credit Union notified Massachusetts residents of a security incident affecting personal information. The specific nature of the event, dates, and number of affected individuals were not disclosed due to Massachusetts law restrictions. The credit union engaged third-party forensic specialists, implemented additional safeguards, and is offering 24 months of credit monitoring via Experian.

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Incident timeline — partial

? — ?

Breach window unknown

Aug 6, 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 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Vermont State AGbd_5daefeb518e44fb92026-08-06Candidate

Name: Guardian Credit Union
norm: guardian credit union
Domain: guardiancu.org

Name: Guardian Credit Union
norm: guardian credit union
Domain: guardiancu.org
Industry: Financial Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 9state-resident count only
Data types: FinancialFinancial accountIdentity (basic)Government IDPII
Attack vector: Unknown
Regulator citations: Will report this event to regulators where required

During the incident: Launched an investigation with the support of third-party forensic specialists
Engaged a third party to conduct a comprehensive review of the information at risk
Performed additional work to review and verify the affected information
Implemented additional safeguards and enhanced monitoring
Providing 24 months of credit monitoring and identity protection services through Experian IdentityWorks
Changes made: Implementation of additional safeguards
Enhanced monitoring
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Vermont State AGAug 6 · first

Massachusetts State AGAug 6 · 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://www.mass.gov/doc/2026-1300-guardian-credit-union/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 6, 2026
Raw hash: 2cc486a7e10167308ac52851e4c8199d20477459b4ff2afad05a989d45710e9b

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityGuardian Credit Union

Victim entityGuardian Credit Union

IncidentUnknown

Stated responseLaunched an investigation with the support of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov