HackingOtherCustomer Data InvolvedIdentity (basic)MediumContained

ECON Heating & Air Conditioning

bd_3a8ba5de5603f869 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 24, 2025

Filed

Sep 15, 2025

To disclose

8 weeks

Affected · nationwide

1,4081 in this filing

Confidence

66%

ECON Heating & Air Conditioning experienced an external system breach (hacking) between February 21 and 24, 2025, discovered on July 24, 2025. The incident affected 1,408 individuals, including 1 Maine resident. Notification was sent on September 12, 2025, offering 12 months of identity theft protection via TransUnion CyberScout.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jul 24, 2025 → Filed with AG Sep 15, 202553d ⏱ ME AG >30d8 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 153 days

discovery → filing · 8 weeks / 53 days

Feb 21, 2025

Begins

Jul 24, 2025

Discovered

Sep 15, 2025

Filed

vs. sector median

1 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1,408 affectedView incident

Name: Polsinelli PC
norm: polsinelli

Name: ECON Heating & Air Conditioning
norm: econ heating air conditioning
Industry: Otherllm

Discovered: Jul 24, 2025
Breach occurred: Feb 21, 2025 – Feb 24, 2025
Undetected for: 153 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 12, 2025
Affected individuals: 1,408state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered 12 Months of identity theft protection services through TransUnion CyberScout Triple Bureau
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 days from discovery to filing)
Compliance flags: ME AG >30d · 53d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jul 24, 2025
→ Filed with AG: Sep 15, 2025
53d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jul 24, 2025 → Filed with AG: Sep 15, 2025	53d	30 days (soft)	ME AG >30d

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/e925b3c5-3c47-418d-926d-af83ddccd5ae.html
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: d9e9768d761173616b60038811eabff9f2ccd25cf6ecc6470b2b5649ab7a4b96

Reporting entityPolsinelli PC

Victim entityECON Heating & Air Conditioning

Incidentdiscovered Jul 24, 2025

Stated responseSent written notification to affected individuals

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov