The akira ransomware group listed GWU-Umwelttechnik GmbH on its data leak site on 2025-08-11. Country: DE Sector: Energy & Utilities Domains named: gwu-umwelttechnik.de Claim as published on the leak site: In summer 2025 our team managed to crack IT defenses of a large number of companies. Data of some of them hasn't been leaked, so we will just list company names.