The qilin ransomware group listed ZEF on its data leak site on 2025-09-21. Country: FI Sector: Government & Defense Domains named: www.zef.de Claim as published on the leak site: ZEF, Germany - Center for Development Research University of Bonn. ZEF conducts interdisciplinary research in the fields of political, economic, and general development. The institute advises governments, national and international organizati ...