The akira ransomware group listed STUMPF MÜLLER Biberach on its data leak site on 2025-04-14. Country: DE Sector: Retail & E-Commerce Domains named: stumpf-mueller.de Claim as published on the leak site: The company rents and leases tools and equipment in the areas of sanitation, heating, control and control technology. We are ready to upload some of essential corporate documents such as: contact numbers and e-mail addresses of employees and custom ers, corporate licenses, agreements and contracts, etc.