The qilin ransomware group listed ZEF's on its data leak site on 2025-10-14. Country: FI Sector: Education Domains named: www.zef.de Claim as published on the leak site: The Center for Development Research (ZEF) is an institute of the University of Bonn, Germany. It started its research activities in 1997. ZEF’s researchers aim to find science-based solutions to promote sustainable development and planetary ...