HackingProfessional ServicesProfessional ServicesDelayed DiscoveryIdentity (basic)Government IDMediumContained

Montgomery Little & Soran, PC

bd_72c46e2ff6ee6fb5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 28, 2025

Filed

Oct 9, 2025

To disclose

32 weeks

Affected

2state residents only

Linked

7 filings

Confidence

67%

Full breach record for Montgomery Little & Soran, PC →

Montgomery Little & Soran, PC notified the NH Attorney General that an unknown actor potentially acquired files containing names and SSNs from its network. The firm first detected unusual activity on Feb 28, 2025, confirmed data involvement on Sep 10, 2025, and notified 2 NH residents on Oct 9, 2025. Forensic investigation was conducted, law enforcement notified, and credit monitoring offered.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d32 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

discovery → filing · 32 weeks / 223 days

Feb 28, 2025

Discovered

Oct 9, 2025

Filed

vs. sector median

+13 wks slower

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

A leak claim by weyhro about this victim predates this filing by 202 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteweyhrobd_8b19bc32488d62a22025-03-21 · +202dVerified by operator

Regulatory filings (5) · sorted by filing gap

Maine State AGbd_22f2292b6a5536a72025-10-09Verified
Nebraska State AGbd_2a9402d863bc231f2025-10-09Verified by operator
Indiana State AGbd_9bd1ba1d3cf1ea642025-10-09Verified by operator
Massachusetts State AGbd_d9908660707777c02025-10-09Verified by operator

Show 1 more filing ↓up to 1d gap

Vermont State AGbd_e94e909ef885935e2025-10-10 · +1dVerified by operator

Name: Constangy, Brooks, Smith & Prophete, LLP
norm: constangy brooks smith prophete

Name: Montgomery Little & Soran, PC
norm: montgomery little soran
Domain: montgomerylittle.com
Industry: Professional Servicesllm

Discovered: Feb 28, 2025
Materiality determined: —
Notification sent: Oct 9, 2025
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General

During the incident: Retained cybersecurity experts and launched a forensics investigation
Implemented additional security measures to further harden its environment
Reported this incident to federal law enforcement and is cooperating with the investigation
Notifying the affected individuals
Offering affected individuals complimentary monitoring and identity protection services through IDX
Changes made: Implemented additional security measures to further harden its environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 32 weeks(223 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 · 6 states

View merged incident ↗

Maine State AGOct 9 · first

Nebraska State AGOct 9 · first

Indiana State AGOct 9 · first

Massachusetts State AGOct 9 · first

New Hampshire State AGOct 9 · first · this page

Vermont State AG+1d

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/montgomery-little-soran-20251009.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 9, 2025
Raw hash: 4aa8d13c7c4a3f15d86f7f490faaca4dbec0b8283b5fffd7950fc674cabec181

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityConstangy, Brooks, Smith & Prophete, LLP

Victim entityMontgomery Little & Soran, PC

Incidentdiscovered Feb 28, 2025

Stated responseRetained cybersecurity experts and launched a forensics investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov