Koen is the Dutch Cybercrime public prosecutor. Before he worked as a Cybercrime Prosecutor in the Hague from 2017 until July 2022 and before that at the EU agency Eurojust (2012-2017) where he was involved in the judicial coordination of various cases, e.g. Operation Blackshades, Operation Onymous / SilkRoad 2.0 and the first ‘EMMA’ operations. In 2007, he began working as a prosecutor in Arnhem where he got infected with a passion fighting Cybercrime. He also spent one year with the Dutch division of the European Court of Human Rights in Strasbourg.