HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

Langdon & Emison LLC

bd_ea4911876d62fd09 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 28, 2025

Filed

Oct 31, 2025

To disclose

22 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

65%

Full breach record for Langdon & Emison LLC →

Langdon & Emison LLC, a Missouri-based law firm, notified the New Hampshire Attorney General of a data security event. Unauthorized access occurred on May 27, 2025, detected on May 28, 2025. The incident potentially exposed New Hampshire residents' names, SSNs, DOBs, driver's license numbers, financial account info, and medical information. No evidence of misuse was found. The firm engaged forensic specialists, notified federal law enforcement, and hosted public notices on October 31, 2025.

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Incident timeline

undetected · 1 days

discovery → filing · 22 weeks / 156 days

May 27, 2025

Begins

May 28, 2025

Discovered

Oct 31, 2025

Filed

vs. sector median

+4 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Maine State AGbd_8544aa1c26be3b282025-10-31Candidate
Massachusetts State AGbd_900230a5f21846aa2025-10-31Verified
Vermont State AGbd_a9626145dbcdb7bf2025-10-31Verified
Nebraska State AGbd_acf750b5e014086f2025-10-31Verified

Name: Langdon & Emison LLC
norm: langdon emison

Name: Langdon & Emison LLC
norm: langdon emison
Industry: Professional Servicesllm

Discovered: May 28, 2025
Breach occurred: May 27, 2025
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General
Initial access: exploit_public_facing

During the incident: Engaged digital forensics specialists to assist with our investigation
Hosted notice of the event on the firm website
Provided notice to the media
Established a toll-free call center to answer individuals’ questions
Notified federal law enforcement and cooperated with its inquiries
Changes made: Implemented additional security measures to minimize the risk of a similar event occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(156 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Maine State AGOct 31 · first

Massachusetts State AGOct 31 · first

Vermont State AGOct 31 · first

Nebraska State AGOct 31 · first

New Hampshire State AGOct 31 · 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/langdon-emison-20251031.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 31, 2025
Raw hash: f5147632d42f65dd448e359293d1c62b4a6576da6da94ac024e3fc22a1da25b4

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityLangdon & Emison LLC

Victim entityLangdon & Emison LLC

Incidentdiscovered May 28, 2025

Stated responseEngaged digital forensics specialists to assist with our investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov