HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Fleur de Lis Federal Credit Union

bd_aea60fd8d393a0b7 · schema v1 · pii pii-v1

Severity

Low

Discovered

May 4, 2026

Filed

Aug 11, 2026

To disclose

14 weeks

Affected

3state residents only

Confidence

66%

Full breach record for Fleur de Lis Federal Credit Union →

Fleur de Lis Federal Credit Union discovered unauthorized activity on a single business email account on May 4, 2026. The incident potentially involved personal information including names and other data elements. The credit union contained the incident by disabling the account and changing passwords, and engaged third-party security professionals. Affected individuals are offered credit monitoring.

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Massachusetts clock✗ MA AG >90d14 weeks discovery → filing

Incident timeline

discovery → filing · 14 weeks / 99 days

May 4, 2026

Discovered

Aug 11, 2026

Filed

vs. sector median

+6 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: Fleur de Lis Federal Credit Union
norm: fleur de lis federal credit union
Domain: fdlfcu.com

Name: Fleur de Lis Federal Credit Union
norm: fleur de lis federal credit union
Domain: fdlfcu.com
Industry: Financial Servicesllm

Discovered: May 4, 2026
Materiality determined: —
Notification sent: Aug 11, 2026
Affected individuals: 3state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified federal regulators
Initial access: valid_credentials

During the incident: Disabled the impacted account
Changed passwords
Proactively taking potentially impacted systems offline
Notified federal regulators
Engaged data security and privacy professionals to assist in our response
Offering complimentary credit monitoring and identity theft protection services through Experian
Changes made: Implemented additional measures to further improve the security of our systems and practices
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(99 days from discovery to filing)
Compliance flags: MA AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

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/2026-1334-fleur-de-lis-federal-credit-union/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 11, 2026
Raw hash: c0f8dde91ed6271f9b83c12a00cf3b9c807bcfee954871c71cbc76577ac0906e

Reporting entityFleur de Lis Federal Credit Union

Victim entityFleur de Lis Federal Credit Union

Incidentdiscovered May 4, 2026

Stated responseDisabled the impacted account

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov