Social EngineeringProfessional ServicesProfessional ServicesPhishingCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)MediumContained

Knox McLaughlin Gornall & Sennett PC

bd_7d8ac106361b59de · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 14, 2025

Filed

Oct 7, 2025

To disclose

21 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

65%

Full breach record for Knox McLaughlin Gornall & Sennett PC →

Knox McLaughlin Gornall & Sennett, P.C. notified consumers of a data security incident detected on May 14, 2025, involving suspicious activity in an employee's email account. Files containing personal information, including names, SSNs, driver's license numbers, and medical data, were accessed on May 19, 2025. The firm engaged cybersecurity specialists and is offering 12 months of credit monitoring and fraud assistance.

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Vermont clock✗ VT AG >45 bday21 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

May 19, 2025

Begins

Oct 7, 2025

Filed

vs. sector median

+2 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_9dba301b3923e6662025-10-07Candidate
New Hampshire State AGbd_2d23f22a176fe23c2025-10-08 · +1dVerified
Montana State AGbd_d1c1c06c6d0484812025-10-08 · +1dVerified by operator

Name: Knox McLaughlin Gornall & Sennett PC
norm: knox mclaughlin gornall sennett

Name: Knox McLaughlin Gornall & Sennett PC
norm: knox mclaughlin gornall sennett
Industry: Professional Servicesllm

Discovered: May 14, 2025
Breach occurred: May 19, 2025
Materiality determined: —
Notification sent: Oct 7, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDHealth (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Engaged cybersecurity specialists to assist with the incident response
Worked with a third-party vendor to undertake a comprehensive review of the employee’s mailbox
Providing access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Scores services at no charge
Providing proactive fraud assistance
Changes made: Implemented measures to enhance security and minimize the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(146 days from discovery to filing)
Compliance flags: VT AG >45 bday
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 · 4 filings · 4 states

View merged incident ↗

Maine State AGOct 7 · first

Vermont State AGOct 7 · first · this page

New Hampshire State AG+1d

Montana 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://ago.vermont.gov/document/2025-10-07-knox-mclaughlin-gornall-sennett-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 7, 2025
Raw hash: e9455a10ab1cbbe8b48173beffffca3fd44e838806a74255772db220bbde4f7b

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityKnox McLaughlin Gornall & Sennett PC

Victim entityKnox McLaughlin Gornall & Sennett PC

Incidentdiscovered May 14, 2025

Stated responseEngaged cybersecurity specialists to assist with the incident response

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov