 De Foy became the first head of the Belgian secret service to give the media an interview about the work of the State Security, in which he paid particular attention to its counterespionage mission.In June 1938, de Foy and J. Schneider, the Director of the Ministry of Foreign Affairs and Foreign Trade, represented Belgium at the Evian Conference in France.By March 1938, after Germany had annexed Austria in the Anschluss, the number of non-Belgian resident Jews had risen to 30,000.