He studied Mathematics and Statistics at Columbia University (B.A. Cum Laude 1975, M.A. 1977) and MIT (Ph.D., 1985). Dr Arsenis started his professional career in the University of Crete, GR and FORTH, GR, as an adjunct Scientist. In 1990, he was recruited by the Joint Research Centre of the European Commission (JRC) to work in Statistics on reliability data under the Reactor Safety program. As of 1995, while continuing to work in Statistics, Arsenis changed his application domain to that of the protection of the budget of the EU and its Member States from financial fraud. This work has been supported by a sequence of administrative agreements between the JRC and the anti-fraud office of the EU, OLAF. Applications of this work have evolved and expanded to include Commission internal data, publicly available trade data; customs declarations owned by Customs Services in the Member States, and Kimberley Process participants’ data on the production and trade of rough diamonds. Arsenis has represented the JRC to the European Safety, Reliability and Data Association (ESReDa), in its formative years 1992-1995. In 2008-2013, he has co-represented the EU to the Working Group on Statistics of the Kimberley Process. As of his retirement from the JRC on September 1, 2017, Arsenis has relocated to Athens Greece from where he continues his affiliation with the JRC and his former colleagues.