Social EngineeringIdentity (basic)Government IDHealth (basic)PHIMediumContained

Knox McLaughlin Gornall & Sennett PC

bd_d1c1c06c6d048481 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 14, 2025

Filed

Oct 8, 2025

To disclose

21 weeks

Affected

4state residents only

Linked

4 filings

Confidence

66%

Full breach record for Knox McLaughlin Gornall & Sennett PC →

Knox McLaughlin Gornall & Sennett, P.C. notified individuals of a data security incident detected on May 14, 2025, involving unauthorized access to an employee's email account. The incident likely exposed names, SSNs, driver's license numbers, and medical information. The firm engaged cybersecurity specialists and offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

May 19, 2025

Begins

Oct 8, 2025

Filed

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

New Hampshire State AGbd_2d23f22a176fe23c2025-10-08Verified
Vermont State AGbd_7d8ac106361b59de2025-10-07 · +1dVerified
Maine State AGbd_9dba301b3923e6662025-10-07 · +1dCandidate

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

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

Discovered: May 14, 2025
Breach occurred: May 19, 2025
Materiality determined: —
Notification sent: Oct 7, 2025
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 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 Score 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(147 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Vermont State AGOct 7 · first

Maine State AGOct 7 · first

New Hampshire State AG+1d

Montana State AG+1d · 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://dojmt.gov/wp-content/uploads/2025/10/Consumer-notification-letter-18.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 8, 2025
Raw hash: fcb6624ab45c8fa4a43ab5b9566d808a0596f49f3c9d8b9f97687f94c637509c

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov