DisclosureLens
GLOBALMalwareConstructionConstructionRansomwareDragonforceRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

King City Lumber

bd_55dfe7ceeb5ad91f · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Dec 5, 2025

To disclose

—

Affected

Not disclosed

Linked

2 records

Confidence

50%
Full breach record for King City Lumber →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group DragonForce on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: ConstructionDiscovered: 2025-12-05

Source: Ransomware.live

Post text · scraped from the leak site

King City Lumber is a well-established provider of quality lumber and building materials, specializing in custom metal structures for over 50 years in the Midwest. The company caters to a diverse clientele, offering solutions for commercial, residential, agricultural, and storage needs. By engaging with clients to understand their specific requirements, they assist in selecting the right metal building for projects ranging from garages to horse barns. King City Lumber is committed to providing excellent service and expert advice throughout the building process

Incident timeline — mostly unverified

? — ?

Breach window unknown

Dec 5, 2025

Claim posted

—

Corroborated · see linked filings

This record's own dates cannot anchor compliance clocks; see the linked filings.

Claim → filing

—

Compliance clock

Not assessable

This leak-site claim is one of 2 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2022-10-20

dragonforce

According to ransomware.live, DragonForce is a major ransomware-as-a-service operation first observed in August 2023 that launched a formal affiliate program offering 80% revenue share, then rebranded as a "ransomware cartel" in 2025, gaining notoriety for high-profile attacks on UK retailers Marks & Spencer, Co-op, and Harrods.

697 tracked hereFull profile →