Arwini
About the organisation
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.
What the listing means
Arwini appeared on the kairos leak site on 11 May 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has published 4 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Arwini as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account with this organisation, change the password now and enable two-factor authentication.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/QXJ3aW5pQGthaXJvcw==