HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)Financial accountLowContained

Marble Harbor Investment Counsel

bd_c8714f176ae0295d · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 23, 2026

Filed

May 21, 2026

To disclose

28 days

Affected

3state residents only

Linked

2 filings

Confidence

66%

Full breach record for Marble Harbor Investment Counsel →

Marble Harbor Investment Counsel, LLC reported to the New Hampshire Attorney General that an unauthorized actor accessed a brokerage platform between April 13 and April 23, 2026. The incident affected 3 New Hampshire residents, exposing names and financial account information. MHIC notified law enforcement, provided 24 months of credit monitoring, and issued notices to affected individuals on May 21, 2026.

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Incident timeline

undetected · 10 days

discovery → filing · 28 days

Apr 13, 2026

Begins

Apr 23, 2026

Discovered

May 21, 2026

Filed

vs. sector median

4 wks faster

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

Massachusetts State AGbd_bf068749598f5e682026-05-21Candidate

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Marble Harbor Investment Counsel
norm: marble harbor investment counsel
Domain: marbleharboric.com
Industry: Financial Servicesllm

Discovered: Apr 23, 2026
Breach occurred: Apr 13, 2026 – Apr 23, 2026
Undetected for: 10 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 21, 2026
Affected individuals: 3state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General Consumer Protection & Antitrust Bureau
Initial access: valid_credentials

During the incident: Notified federal law enforcement regarding the event
Provided access to triple bureau credit monitoring services for 24 months, through IDX
Changes made: Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Provided individuals with information on how to place a fraud alert and security freeze on one’s credit file
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 days(28 days from discovery to filing)
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 ↗

Massachusetts State AGMay 21 · first

New Hampshire State AGMay 21 · 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://mm.nh.gov/files/uploads/doj/remote-docs/marble-harbor-investment-counsel-20260521.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 21, 2026
Raw hash: 607a7e997c6b5633e69ce50579e8fb76e169e3d9a03a0562d563f5f2bca1b16b

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityMarble Harbor Investment Counsel

Incidentdiscovered Apr 23, 2026

Stated responseNotified federal law enforcement regarding the event

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov