The thegentlemen ransomware group listed Instituut voor de Nederlandse on its data leak site on 2026-05-15. Country: NL Sector: Government & Defense Domains named: ivdnt.org, rocketreach.co Claim as published on the leak site: ivdnt.org rocketreach.co/instituut-voor-de-nederlandse-taal-profile_b45f686efc6979e6 It advances the study and preservation of Dutch through cutting-edge research, digital tools, and open-access resources covering vocabulary, grammar, dialects, and terminology. The institute curates authoritative references like the Algemene Nederlandse Spraakkunst for scholars, educators, and language enthusiasts worldwide