HackingOtherData ExfiltratedTargetedIdentity (basic)PIILowContained

ENCON Heating & Air Conditioning

bd_76382f1348b83639 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 24, 2025

Filed

Sep 15, 2025

To disclose

29 weeks

Affected

Not disclosed

Confidence

67%

ENCON Heating & Air Conditioning experienced a security incident where an unauthorized third party accessed computer systems between Feb 21-24, 2025. Personal information including names and other PII from HR files was acquired. The company notified law enforcement, engaged forensic experts, secured deleted files, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday29 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

undetected · 3 days

discovery → filing · 29 weeks / 203 days

Feb 21, 2025

Begins

Feb 24, 2025

Discovered

Sep 15, 2025

Filed

vs. sector median

+21 wks slower

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

Name: ENCON Heating & Air Conditioning
norm: encon heating & air conditioning

Name: ENCON Heating & Air Conditioning
norm: encon heating & air conditioning
Industry: Otherllm

Discovered: Feb 24, 2025
Breach occurred: Feb 21, 2025 – Feb 24, 2025
Undetected for: 3 daysoccurrence → discovery
Materiality determined: Sep 15, 2025
Notification sent: Sep 15, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement
Initial access: exploit_public_facing

During the incident: Notified law enforcement
Engaged cybersecurity experts
Secured the deletion of any acquired files
Retained a third party service to monitor online forums and marketplaces
Added network requirements to fortify the security of the environment
Sent notification letters to affected individuals
Offered complimentary credit monitoring service
Changes made: Added network requirements to fortify the security of the environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(203 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/2025-09-15-encon-heating-air-conditioning-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 15, 2025
Raw hash: 0e1740ea2c0f5a14ec247a6fb933730c16e304394bacad20eef9e3c4d24799c7

Reporting entityENCON Heating & Air Conditioning

Victim entityENCON Heating & Air Conditioning

Incidentdiscovered Feb 24, 2025

Stated responseNotified law enforcement

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov