The zawoo ransomware group listed rsk-immobilien.de on its data leak site on 2026-08-30. Country: DE Sector: Retail & E-Commerce Domains named: rsk-immobilien.de Claim as published on the leak site: RSK Immobilien GmbH is a German real-estate project developer and property company headquartered in Weißenfels, Saxony-Anhalt. Its core activities are the development, realization, renovation and marketing of residential and commercial properties, with a strong current focus on residential projects.