Arwini
bd_92ece2d91caceb70 · schema v1 · pii pii-v1
Full breach record for Arwini →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.
Source: Ransomware.live
Post text · scraped from the leak site
Arbeitsgemeinschaft Wirtschaftlichkeitsprüfung Niedersachsen e.V. (ARWINI) is a registered association in Lower Saxony, Germany, whose public role is to host the joint Wirtschaftlichkeitsprüfung setup for statutory health insurance under SGB V. It brings together the KVN (the regional association of panel physicians) and the health insurers in a shared inspection / audit structure for contractual outpatient care. Day-to-day work covers procedures, consultations with physicians where relevant, and formal processes linked to efficiency and appropriateness of care and billing. The brand ARWINI is the short name used in official documents and online; arwini.de is the domain commonly associated with that name. Operationally the body sits in the social health sector rather than ordinary consumer or tech markets.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
May 11, 2026
Claim posted
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No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
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.
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.