The thegentlemen ransomware group listed Groupe AC Environnement on its data leak site on 2026-10-31. Country: FR Sector: Energy & Utilities Domains named: ac-environnement.com Claim as published on the leak site: ac-environnement.com Groupe AC Environnement is a French environmental engineering company founded in 1997 in Pontarlier, delivering integrated solutions for water treatment, wastewater, waste management and bioremediation. With 160 employees across five subsidiaries including GEG, Maraîch'Hydro and Biovéa, it has completed over 120 projects in 13 countries. Its standout project is the STEP des Voraces, France's first large-scale wastewater plant featuring demethanization serving 300,000 equival