HackingConstructionConstructionCustomer Data InvolvedPIIIdentity (basic)LowContained

Lydig Construction

bd_ad32f3aaabbc73f1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 23, 2025

Filed

Dec 12, 2025

To disclose

25 weeks

Affected

20state residents only

Linked

3 filings

Confidence

64%

Full breach record for Lydig Construction →

Lydig Construction, Inc. notified Montana residents of unauthorized access to server files between June 21-23, 2025, discovered on June 23, 2025. The incident involved personal information (names and other PII). The company investigated, secured systems, and offered credit monitoring via Epiq.

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Leak gap clock⏱ Leak >90d25 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 · 2 days

discovery → filing · 25 weeks / 172 days

Jun 21, 2025

Begins

Jun 23, 2025

Discovered

Dec 12, 2025

Filed

This filing is one of 3 about the same incident.View merged incident

A leak claim by play about this victim predates this filing by 161 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteplaybd_3717433e9ef6b0f52025-07-03 · +161dVerified

Regulatory filings (1) · sorted by filing gap

Washington State AGbd_4639a1ce0b0054cf2025-12-12Candidate

Name: Lydig Construction
norm: lydig construction
Domain: lydig.com

Name: Lydig Construction
norm: lydig construction
Domain: lydig.com
Industry: Constructionllm

Discovered: Jun 23, 2025
Breach occurred: Jun 21, 2025 – Jun 23, 2025
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 20state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: notify applicable regulatory authorities as necessary

During the incident: Promptly commenced an investigation to confirm the nature and scope of this incident
Confirming the security of our systems
Reviewing the contents of relevant data for sensitive information
Notifying potentially impacted individuals
Offering complimentary access to credit monitoring services through Epiq
Changes made: Continue to review our policies, procedures and processes related to the storage and access of personal information to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(172 days from discovery to filing)
Compliance flags: Leak >90d
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.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Washington State AGDec 12 · first

Montana State AGDec 12 · 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://dojmt.gov/wp-content/uploads/2026/03/Consumer-notification-letter-3.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 12, 2025
Raw hash: f64f3fb6d9792bdb2595011bb9c26d6dee03de8ba70cc9c60c980a3f92d4f5db

Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entityLydig Construction

Victim entityLydig Construction

Incidentdiscovered Jun 23, 2025

Stated responsePromptly commenced an investigation to confirm the nature and scope of this incident

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov