The lamashtu ransomware group listed Hecker Holzsystembau on its data leak site on 2026-10-22. Country: DE Sector: Manufacturing Domains named: hecker-hsb.de Claim as published on the leak site: German construction company specializing in custom timber houses, sustainable wood construction, and prefabricated buildings. It offers complete project planning, roofing, extensions, renovations, and turnkey solutions for residential, commercial.