HackingManufacturingManufacturingStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Timberline Construction Corporation

bd_e95b5da298041966 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 21, 2025

Filed

Oct 21, 2025

To disclose

9 weeks

Affected · nationwide

38631 in this filing

Linked

4 filings

Confidence

66%

Full breach record for Timberline Construction Corporation →

Timberline Construction reported a data breach on August 21, 2025, where an unauthorized actor accessed systems containing names and Social Security numbers. 386 individuals were affected, including 31 Maine residents. Notices were sent on October 20, 2025, offering 12 months of credit monitoring via Epiq.

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Maine clockDiscovered Aug 21, 2025 → Filed with AG Oct 21, 202561d ⏱ ME AG >30d9 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 9 weeks / 61 days

Aug 21, 2025

Begins

Aug 21, 2025

Discovered

Oct 21, 2025

Filed

vs. sector median

2 wks faster

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_59446d7c22d9720f2025-10-21Verified
Massachusetts State AGbd_d5bc00c9a62255882025-10-21Verified
Vermont State AGbd_e7c9c4277b952d6d2025-10-21Verified

Name: Timberline Construction Corporation
norm: timberline construction
Domain: timberlineconstruction.com

Name: Timberline Construction Corporation
norm: timberline construction
Domain: timberlineconstruction.com
Industry: Manufacturingllm

Discovered: Aug 21, 2025
Breach occurred: Aug 21, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 20, 2025
Affected individuals: 386state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Provided written notice to relevant state regulators
Initial access: valid_credentials

During the incident: Timberline took prompt steps to secure the environment and launched an investigation
Timberline undertook a review of the files to determine their contents and to whom they relate
Timberline provided written notice of this incident to relevant state regulators
Timberline is providing access to credit monitoring services for one (1) year through Epiq
Changes made: Working to implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(61 days from discovery to filing)
Compliance flags: ME AG >30d · 61d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 21, 2025
→ Filed with AG: Oct 21, 2025
61d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 21, 2025 → Filed with AG: Oct 21, 2025	61d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

New Hampshire State AGOct 21 · first

Massachusetts State AGOct 21 · first

Vermont State AGOct 21 · first

Maine State AGOct 21 · first · 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/ae1bc7e7-c728-4361-8978-286169cd2efc.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 21, 2025
Raw hash: 37f09c8aa5a3cb408b186ca39933ab8b48d2615505160c2b70022616f5c01161

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityTimberline Construction Corporation

Victim entityTimberline Construction Corporation

Incidentdiscovered Aug 21, 2025

Stated responseTimberline took prompt steps to secure the environment and launched an investigation

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov