HackingPIILowContained

King City Lumber

bd_e26c24ec54d75893 · schema v1 · pii pii-v1

Severity

Low

Discovered

Dec 3, 2025

Filed

Mar 31, 2026

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for King City Lumber →2 incidents on file

King City Lumber Company notified Nebraska residents of a cybersecurity incident occurring between November 27 and December 3, 2025. The company discovered unusual network activity on December 3, 2025, leading to an investigation that revealed unauthorized viewing/copying of personal information. Affected individuals were offered 12 months of free credit monitoring and fraud assistance via Cyberscout/TransUnion. The notification letter was dated March 31, 2026.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d

Incident timeline

undetected · 6 days

Nov 27, 2025

Begins

Dec 3, 2025

Discovered

Mar 31, 2026

Filed

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

A leak claim by dragonforce about this victim predates this filing by 115 days.View originating leak claim

Name: King City Lumber
norm: king city lumber
Domain: kingcitylumber.com

Name: King City Lumber
norm: king city lumber
Domain: kingcitylumber.com

Discovered: Dec 3, 2025
Breach occurred: Nov 27, 2025 – Dec 3, 2025
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 31, 2026
Affected individuals: Not disclosed
Data types: PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Began an investigation into the scope and nature of the suspicious activity
Retained legal counsel and third-party forensic specialists to investigate the unusual activity
Began a comprehensive review of the data set to determine what sensitive and/or personal information was impacted
Notifying potentially impacted individuals
Providing you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing you with proactive fraud assistance
Changes made: Providing you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing you with proactive fraud assistance
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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://nebraska.gov/ago/data-breach/documents/728341bd-b350-4ec9-8a3c-56c1b650a1fd.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 31, 2026
Raw hash: d48e267770434739a4d37af51279f813865611e06ec3f44bcf7769f219be12a5

Reporting entityKing City Lumber

Victim entityKing City Lumber

Incidentdiscovered Dec 3, 2025

Stated responseBegan an investigation into the scope and nature of the suspicious activity

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancenebraska.gov