HackingOtherData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

CHESAPEAKE BAY MARITIME MUSEUM, INC.

bd_17c0f72b06555476 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 9, 2024

Filed

Jan 5, 2026

To disclose

17 months

Affected · nationwide

5,1817 in this filing

Linked

7 records

Confidence

65%

Full breach record for CHESAPEAKE BAY MARITIME MUSEUM, INC. →

Chesapeake Bay Maritime Museum, Inc. reported an external system breach (hacking) occurring between August 8-9, 2024. The incident compromised names, SSNs, and financial account information for 5,181 individuals, including 7 Maine residents. Notices were sent on December 30, 2025, offering 12 months of credit monitoring.

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

+67 wks slower

This filing is one of 7 records about the same incident.View merged incident

A leak claim by helldown about this victim was first seen 510 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitehelldownbd_084b3f6ff08b87292024-08-09 · +514dVerified by operator

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_aacb680b71728cc02026-01-05Verified
Vermont State AGbd_ce8cea50b233d3d22026-01-05Verified by operator
New Hampshire State AGbd_e9629af8d682f7a02026-01-05Verified by operator
Indiana State AGbd_95889a4552aa6e8e2025-12-30 · +6dVerified by operator

Show 1 more filing ↓up to 6d gap

Vermont State AGbd_bd6122882e7077932025-12-30 · +6dVerified by operator

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

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: 5,181state + nationwide
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProviding written notice of this incident to relevant state regulators
Initial access: exploit_public_facing

During the incident: Moved quickly to investigate and respond to the incident
Assessed the security of CBMM systems
Identified potentially affected individuals
Notified federal law enforcement regarding the event
Provided access to credit monitoring services for 12 months through IDX
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implementing additional safeguards and training to its employees
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 >180dME AG >30d · 514dME resident >60d · 508d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 9, 2024
→ Filed with AG: Jan 5, 2026
514d 30 days (soft) ME AG >30d
Maine
Discovered: Aug 9, 2024
→ Notified: Dec 30, 2025
508d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 9, 2024 → Filed with AG: Jan 5, 2026	514d	30 days (soft)	ME AG >30d
Maine	Discovered: Aug 9, 2024 → Notified: Dec 30, 2025	508d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

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

Massachusetts State AG+6d

Vermont State AG+6d

New Hampshire State AG+6d

Maine State AG+6d · this page

Pattern: first filing Dec 30 (IN), last Jan 5 (ME) — 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/a189f7db-0abc-424b-97e9-308854d5decd.html
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: 7d67b9cfd3d304324ef68ef13aaf5d3f8867863e5eaf6908decb870ec85ac774

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityCHESAPEAKE BAY MARITIME MUSEUM, INC.

Victim entityCHESAPEAKE BAY MARITIME MUSEUM, INC.

Incidentdiscovered Aug 9, 2024

Stated responseMoved quickly to investigate and respond to the incident

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov