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GLOBALMalwareManufacturingManufacturingRansomwareKairosRansom DemandedActor NamedMedium

Krapf Group

bd_7aa067a44d4e4709 · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Sep 22, 2026

To disclose

—

Affected

Not disclosed

Confidence

50%
Full breach record for Krapf Group →2 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Kairos 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: 2026-09-22

Source: Ransomware.live

Post text · scraped from the leak site

Founded in 1942 and headquartered in West Chester, Pennsylvania, Krapf Group is a family-owned and operated transportation business. Operates a fleet of more than 2,500 school buses and commercial vehicles with over 3,500 employees. The data also contains personal information about thousands of bus drivers.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Sep 22, 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 2024-06-26

kairos

According to ransomware.live, Kairos is a data extortion group active since late 2024 that focuses solely on data theft with no encryption, primarily targeting small-to-mid-sized organizations in healthcare, manufacturing, and business services in the US, purchasing initial access from brokers and demanding Bitcoin payments.

108 tracked hereFull profile →