DisclosureLens
GLOBALMalwareManufacturingManufacturingRansomwareM3rxRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Lindner Group

bd_9faedb34006b6a65 · schema v1 · pii pii-v2

Severity

High

Discovered

Filed

Aug 29, 2026

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Lindner Group

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group M3rx 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: ManufacturingDiscovered: 2026-08-29

Source: Ransomware.live

Post text · scraped from the leak site

Lindner Group is Europe's leading manufacturer and service provider specializing in interior fit-out, building envelope, and insulation technology. With over 60 years of experience, the company offers tailored project solutions and products, ranging from ceilings, floors, and partitions to clean rooms and HVAC systems. Their diverse client base includes industries requiring renovation, refurbishments, and turnkey projects, with a commitment to digitalization and sustainability. Operating in more than 40 countries with approximately 8,000 employees, Lindner Group places emphasis on innovation, quality, and customer-centric service Stolen: 4.6TB 2,638,995 Files

Incident timeline — mostly unverified

? — ?

Breach window unknown

Aug 29, 2026

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 2026-04-29

m3rx

According to ransomware.live, M3rx is a small ransomware group first observed in 2025, using AES-CTR/AES-GCM encryption and targeting organizations in England, the US, Australia, Germany, Italy, and Switzerland, with around eight claimed victims including a Sydney-based property firm.

38 tracked hereFull profile →