HackingOtherStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

CHESAPEAKE BAY MARITIME MUSEUM, INC.

bd_e9629af8d682f7a0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 9, 2024

Filed

Jan 5, 2026

To disclose

17 months

Affected

5state residents only

Linked

6 filings

Confidence

66%

Full breach record for CHESAPEAKE BAY MARITIME MUSEUM, INC. →2 incidents on file

Chesapeake Bay Maritime Museum, Inc. notified the New Hampshire Attorney General of a data event affecting 5 NH residents. Unauthorized access occurred Aug 8-9, 2024, involving copying of files containing names, SSNs, and financial account info. Notice sent Dec 30, 2025. Response included law enforcement notification, credit monitoring via IDX, and employee training.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d17 months 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

undetected · 1 days

discovery → filing · 17 months / 514 days

Aug 8, 2024

Begins

Aug 9, 2024

Discovered

Jan 5, 2026

Filed

vs. sector median

+66 wks slower

This filing is one of 6 about the same incident.View merged incident

A leak claim by helldown about this victim predates this filing by 514 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Maine State AGbd_17c0f72b065554762026-01-05Verified by operator
Massachusetts State AGbd_aacb680b71728cc02026-01-05Verified
Vermont State AGbd_ce8cea50b233d3d22026-01-05Verified
Indiana State AGbd_95889a4552aa6e8e2025-12-30 · +6dCandidate

Show 1 more filing ↓up to 6d gap

Vermont State AGbd_bd6122882e7077932025-12-30 · +6dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: CHESAPEAKE BAY MARITIME MUSEUM, INC.
norm: chesapeake bay maritime museum
Domain: cbmm.org
Industry: Otherllm

Discovered: Aug 9, 2024
Breach occurred: Aug 8, 2024 – Aug 9, 2024
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Dec 30, 2025
Affected individuals: 5state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated CollectionT1078 Valid Accounts
Threat actor: External
Regulator citations: Providing written notice of this incident to relevant state regulators, as necessary, and to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Initial access: valid_credentials

During the incident: Notified federal law enforcement regarding the event
Providing access to credit monitoring services for 12 months, through IDX, to individuals whose personal information was potentially affected by this incident, at no cost to these individuals
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Working to implement additional safeguards and training to its employees
Changes made: Implemented additional security measures to further protect against similar incidents in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 months(514 days from discovery to filing)
Compliance flags: Leak >180d
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 · 6 filings · 5 states

View merged incident ↗

Indiana State AGDec 30 · first

Vermont State AGDec 30 · first

Maine State AG+6d

Massachusetts State AG+6d

Vermont State AG+6d

New Hampshire State AG+6d · this page

Pattern: first filing Dec 30 (IN), last Jan 5 (NH) — 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://mm.nh.gov/files/uploads/doj/remote-docs/chesapeake-bay-maritime-museum-20260105.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 5, 2026
Raw hash: 3b616d2ccdd1c7dee2c9c23ab2ae5e16d596a7ec2bf189b294c7352d658ebbd0

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityCHESAPEAKE BAY MARITIME MUSEUM, INC.

Incidentdiscovered Aug 9, 2024

Stated responseNotified federal law enforcement regarding the event

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov