HackingOtherData ExfiltratedIdentity (basic)LowContained

Thornton Plumbing and Heating Inc.

bd_69a9f82084a8b100 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 12, 2025

Filed

Jan 30, 2026

To disclose

11 weeks

Affected

Not disclosed

Confidence

67%

Full breach record for Thornton Plumbing and Heating Inc. →

Thornton Plumbing and Heating Inc. notified Vermont consumers of a data breach detected on November 12, 2025. Unauthorized access resulted in the exfiltration of personal information, including names and other data elements. The company disconnected its network, engaged forensic professionals, and notified federal law enforcement. Affected individuals are offered 12 months of identity monitoring via Kroll.

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Vermont clock✗ VT AG >45 bday11 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 · 11 weeks / 79 days

Nov 12, 2025

Discovered

Jan 30, 2026

Filed

vs. sector median

+3 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Thornton Plumbing and Heating Inc.
norm: thornton plumbing and heating

Name: Thornton Plumbing and Heating Inc.
norm: thornton plumbing and heating
Industry: Otherllm

Discovered: Nov 12, 2025
Materiality determined: —
Notification sent: Jan 30, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement

During the incident: Disconnecting our network from the internet
Partnered with professionals to investigate the nature and scope of the event
Conducted a thorough review of the data accessible to us
Partnered with professionals to thoroughly investigate the incident
Notified federal law enforcement
Changes made: Assessing our existing security safeguards and policies for ways we can strengthen our systems and increase our resilience against evolving threats
Providing you with access to 12 months of identity monitoring at no charge
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(79 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.

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/2026-01-30-thornton-plumbing-and-heating-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 30, 2026
Raw hash: 637e9cf1e735593eef537a7dbd2589be3724d7624eec19f8576e1b7095745aa1

Reporting entityThornton Plumbing and Heating Inc.

Victim entityThornton Plumbing and Heating Inc.

Incidentdiscovered Nov 12, 2025

Stated responseDisconnecting our network from the internet

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov