The akira ransomware group listed Gumpp Kunststoffe on its data leak site on 2026-04-23. Country: DE Sector: Manufacturing Domains named: gumpp-kunststoffe.de Claim as published on the leak site: KKG Gumpp is a wholesale company based in Königsbrunn, Bavaria, s pecializing in technical textiles and fabrics for various applica tions. We will upload corporate data soon. Employee personal documents ( passports, DLs), client information, projects, contracts and agre ements, etc.