The akira ransomware group listed Meissner Fenstertechnik on its data leak site on 2025-08-01. Country: DE Sector: Manufacturing Domains named: meissnerfenstertechnik.de Claim as published on the leak site: Meissner Fenstertechnik creates solutions for building components . Innovative technologies for windows and doors. We are ready to upload 20 GB of corporate documents. A lot of emp loyees personal documents, project details, financials, customers information, contracts and agreements, NDAs, etc.