Mr. Rebufii graduated in Nuclear Engineering at the “Politecnico di Milano” (1984) and obtaining a PhD in Engineering at Paris – Orsay University (1987). From 1988- 1991 has worked on the development of high power microwave systems for the next thermonuclear fusion reactor (ITER). He continued his carrier at Thomson CSF / Thales where he took on increasing responsibilities for European Affairs (R&D) in different sectors: telecom, industrial, medical, scientific, and becoming in 2003 Director for European Affairs for the civilian activities of the Group. In 2007, he suggested the creation of EOS (European Organisation for Security) and coordinated its establishment while he was still Deputy Director for Security at ASD. He is the CEO of EOS and President of the Steering Board of the French ANR for security research. Since June 2016 is the Secretary General of the European Cyber Security Organisation (ECSO).