Arno H.P. Reuser is an information professional, founder and manager (ret.) of the Open Source Intelligence (OSINT) branch of the Defence Intelligence and Security Service, The Netherlands, and, founder and owner of Reuser’s Information Services (2008-present). From 1990 onwards, Arno from the ground up designed and managed a full functional OSINT intelligence capability for the armed forces that resulted in a full bureau with a fixed position in the intelligence production process. It was one of the very first OSINT branches in Europe. In 2008 Arno founded Reuser’s Information Services to meet the increasing demand for worldwide talks, presentations, consultancy, workshops and training programmes on OSINT, cyber security, and SOCMINT. In 2013 Arno resigned from the service to devote all his time to his company. Today Arno teaches OSINT to a wide variety of customers, mainly (semi) government and academia. Arno speaks at conferences, lectures, writes articles, book chapters, does radio interviews, runs several websites, podcasts and he does OSINT research. Arno was awarded a Golden Candle Award and a Lifetime Award for his work.