HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountFinancial credentialsHighContained

Normandin, Cheney & O'Neil PLLC

bd_893522279e36d56a · schema v1 · pii pii-v1

Severity

High

Discovered

Dec 24, 2025

Filed

Aug 12, 2026

To disclose

33 weeks

Affected

3,601state residents only

Linked

3 filings

Confidence

66%

Full breach record for Normandin, Cheney & O'Neil PLLC →4 incidents on file

Normandin, Cheney & O’Neil, PLLC, a law firm, reported a supplemental data breach affecting approximately 3,601 additional New Hampshire residents. Unauthorized access occurred between December 20-24, 2025, and was discovered on December 24, 2025. Affected data may include names, SSNs, passport numbers, driver's license numbers, and financial account details. The firm notified law enforcement, changed passwords, and offered credit monitoring.

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Incident timeline

undetected · 4 days

discovery → filing · 33 weeks / 231 days

Dec 20, 2025

Begins

Dec 24, 2025

Discovered

Aug 12, 2026

Filed

vs. sector median

+14 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_e4e1e2c7427446662026-08-12Candidate
Nebraska State AGbd_f94d44908ad2344c2026-08-12Verified

Name: Normandin, Cheney & O’Neil, PLLC
norm: normandin cheney oneil
Domain: cipriani.com

Name: Normandin, Cheney & O'Neil PLLC
norm: normandin cheney o neil
Industry: Professional Servicesllm

Discovered: Dec 24, 2025
Breach occurred: Dec 20, 2025 – Dec 24, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 12, 2026
Affected individuals: 3,601state-resident count only
Data types: Identity (basic)Government IDFinancial accountFinancial credentials
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Notified law enforcement
Conducted a thorough investigation
Changed network passwords
Reviewed their policies and procedures
Offering all individuals complimentary credit monitoring and identity protection services
Changes made: Reviewed their policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 33 weeks(231 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGAug 12 · first

Nebraska State AGAug 12 · first

New Hampshire State AGAug 12 · 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/normandin-cheney-oneil-20260812.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 12, 2026
Raw hash: 81be5e34862eed1bf11dd30fa31ecf9880395881be518528bb713aaabd7a3006

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityNormandin, Cheney & O’Neil, PLLC

Victim entityNormandin, Cheney & O'Neil PLLC

Incidentdiscovered Dec 24, 2025

Stated responseNotified law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov