DisclosureLens
GLOBALMalwareProfessional ServicesProfessional ServicesRansomwareWorldleaksRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

AMBAU Personalservice

bd_a18ea81b6b4b231b · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Apr 1, 2026

To disclose

—

Affected

Not disclosed

Confidence

50%
Full breach record for AMBAU Personalservice →2 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Worldleaks 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: Business ServicesDiscovered: 2026-04-01
View aggregator listing on ransomware.live

Source: Ransomware.live

Company description · AI-generated by the aggregator, not the leak post

AMBAU Personalservice is a staffing and recruitment company based in Germany. It specializes in providing highly skilled personnel across various industries including construction, industry, logistics, and traffic fields. Their services cater to both temporary and permanent staffing needs. The company is known for its effective, comprehensive services encompassing the full cycle of recruitment, placement, and employee management.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Apr 1, 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 2022-06-23

worldleaks

According to ransomware.live, World Leaks emerged in January 2025 as a rebrand of the Hunters International ransomware operation, shifting its focus from file encryption to solely stealing sensitive data and threatening to leak it unless a ransom is paid

187 tracked hereFull profile →