HackingProfessional ServicesProfessional ServicesData ExfiltratedTargetedIdentity (basic)LowContained

Thede Culpepper Moore Munro & Silliman LLP

bd_b2cfec658cb2ab9d · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 21, 2024

Filed

Apr 11, 2025

To disclose

51 weeks

Affected · nationwide

4371 in this filing

Linked

7 filings

Confidence

65%

Full breach record for Thede Culpepper Moore Munro & Silliman LLP →

Thede Culpepper Moore Munro & Silliman LLP experienced an external system breach between April 11-12, 2024, discovered on April 21, 2024. Unauthorized access resulted in the copying of files containing names and other personal identifiers. 437 individuals were affected. The firm engaged a cybersecurity firm, enhanced technical security measures, and offered one year of Experian IdentityWorks credit monitoring to affected individuals.

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Maine clockDiscovered Apr 21, 2024 → Filed with AG Apr 11, 2025355d ✗ ME AG >90d51 weeks 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 · 10 days

discovery → filing · 51 weeks / 355 days

Apr 11, 2024

Begins

Apr 21, 2024

Discovered

Apr 11, 2025

Filed

vs. sector median

+33 wks slower

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

A leak claim by lockbit_3 about this victim predates this filing by 355 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Sitelockbit_3bd_6cf8382eefcd1fe92024-05-07 · +339dVerified
Leak Sitelockbit_3bd_b62523ef6f0ded0b2024-04-21 · +355dVerified

Regulatory filings (4) · sorted by filing gap

Vermont State AGbd_02ce72ca48a977372025-04-11Verified
Indiana State AGbd_0da6f06c514faa472025-05-15 · +34dVerified
Oregon State AGbd_54478496442b8ecd2025-05-15 · +34dVerified by operator
Nebraska State AGbd_8f74b067150d65492025-05-15 · +34dVerified

Name: Thede Culpepper Moore Munro & Silliman LLP
norm: thede culpepper moore munro silliman
Domain: thede-culpepper.com
Industry: Legal Services

Name: Thede Culpepper Moore Munro & Silliman LLP
norm: thede culpepper moore munro silliman
Domain: thede-culpepper.com
Industry: Legal Services
Industry: Professional Servicesllm

Discovered: Apr 21, 2024
Breach occurred: Apr 11, 2024 – Apr 12, 2024
Undetected for: 10 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 11, 2025
Affected individuals: 437state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Filed notification with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Initiated an internal investigation
Engaged a cybersecurity firm to further investigate and confirm the security of our computer systems
Changes made: Enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 51 weeks(355 days from discovery to filing)
Compliance flags: ME AG >90d · 355dME resident >180d · 355dLeak >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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Apr 21, 2024
→ Filed with AG: Apr 11, 2025
355d 90 days ME AG >90d
Maine
Discovered: Apr 21, 2024
→ Notified: Apr 11, 2025
355d 180 days ME resident >180d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Apr 21, 2024 → Filed with AG: Apr 11, 2025	355d	90 days	ME AG >90d
Maine	Discovered: Apr 21, 2024 → Notified: Apr 11, 2025	355d	180 days	ME resident >180d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Vermont State AGApr 11 · first

Maine State AGApr 11 · first · this page

Indiana State AG+34d

Oregon State AG+34d

Nebraska State AG+34d

Pattern: first filing Apr 11 (VT), last May 15 (NE) — a 34-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/aa535d06-b759-4b6b-af7e-f63c104317be.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 11, 2025
Raw hash: 2ed3b67a5efdd5fddf40a9f44943ac20ddc464060f4a6a01aa1f861ce3a16c90

Linked disclosures

Ransomware claims (2)

Regulatory filings (4) · sorted by filing gap

Reporting entityThede Culpepper Moore Munro & Silliman LLP

Victim entityThede Culpepper Moore Munro & Silliman LLP

Incidentdiscovered Apr 21, 2024

Stated responseInitiated an internal investigation

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov