HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDMediumContained

McLaughlin & Stern LLP

bd_cfaaaf758e7fdb2b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 7, 2025

Filed

Jul 3, 2025

To disclose

12 weeks

Affected

7state residents only

Linked

5 filings

Confidence

66%

Full breach record for McLaughlin & Stern LLP →

McLaughlin & Stern, LLP reported that on or about April 7, 2025, an unknown actor copied and/or downloaded data containing names and Social Security numbers. The firm engaged third-party specialists to investigate, confirmed network security, and identified 7 affected New Hampshire residents. Notifications were sent on July 3, 2025, offering credit monitoring services.

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Leak gap clock⏱ Leak >30d12 weeks discovery → filing

Incident timeline

discovery → filing · 12 weeks / 87 days

Apr 7, 2025

Discovered

Jun 3, 2025

Scope determined

Jul 3, 2025

Filed

vs. sector median

6 wks faster

This filing is one of 5 about the same incident.View merged incident

A leak claim by silentransomgroup about this victim predates this filing by 88 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitesilentransomgroupbd_a13ed0fa91e417d62025-04-05 · +89dVerified

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_2f536740152c6bea2025-07-03Verified
Vermont State AGbd_4248a16a41f158e72025-07-03Verified
Massachusetts State AGbd_ecc13fb84897e4b72025-07-03Verified by operator

Name: McLaughlin & Stern LLP
norm: mclaughlin stern
Domain: mclaughlinstern.com

Name: McLaughlin & Stern LLP
norm: mclaughlin stern
Domain: mclaughlinstern.com
Industry: Professional Servicesllm

Discovered: Apr 7, 2025
Materiality determined: Jun 3, 2025
Notification sent: Jul 3, 2025
Affected individuals: 7state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General Consumer Protection Bureau

During the incident: Engaged third-party computer specialists to conduct a comprehensive review of the data
Ensured the security of our computer network
Implemented additional safeguards to further enhance the security of information
Offered complimentary credit monitoring and identity protection services
Provided written notification to potentially impacted residents via First Class Mail
Changes made: Implemented additional safeguards to further enhance the security of information in its possession
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(87 days from discovery to filing)
Compliance flags: Leak >30d
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.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Maine State AGJul 3 · first

Vermont State AGJul 3 · first

Massachusetts State AGJul 3 · first

New Hampshire State AGJul 3 · 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/mclaughlin-stern-20250703.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 3, 2025
Raw hash: f4c56a3e2d2f7b41823bacf7af61b09129f4499d4aa023e9e6f535b6c43ea44f

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityMcLaughlin & Stern LLP

Victim entityMcLaughlin & Stern LLP

Incidentdiscovered Apr 7, 2025

Stated responseEngaged third-party computer specialists to conduct a comprehensive review of the data

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov