DisclosureLens
GLOBALMalwareConstructionConstructionRansomwareSinobiRansom DemandedActor NamedMedium

Tibbetts Lumber

bd_aabb4d79ae8303db · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Oct 8, 2025

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Tibbetts Lumber

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Sinobi 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: 2025-10-08

Source: Ransomware.live

Post text · scraped from the leak site

Tibbetts Lumber Co. is a leading provider of construction materials in Florida and the Caribbean, offering a wide range of residential building products including lumber, trusses, and millwork. Established in 1949, the company prides itself on delivering high-quality products at reasonable prices while fostering a family-centric work culture. Their services cater primarily to residential builders, providing manufactured trusses, installed trim, windows, and siding for new construction and remodeling projects. With a commitment to excellence and integrity, Tibbetts Lumber aims to serve its customers while honoring its legacy.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Oct 8, 2025

Claim posted

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

Compliance clock

Not assessable

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

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.

No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.

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 2025-03-24

sinobi

According to ransomware.live, Sinobi is a private vetted-affiliate RaaS group that emerged in mid-2025, believed to be a rebrand of the Lynx/INC ransomware lineage, claiming 176 victims by end of 2025 through double-extortion attacks primarily against mid-market US organizations via compromised SonicWall VPN credentials.

274 victims claimed globally274 tracked hereFull profile →