This article examines the Ottoman counter-intelligence mechanism and the extent to which it succeeded in preventing enemy intelligence. In the 16th century, the length and the scope of both Ottoman-Habsburg and the Ottoman Safavid Rivalry convinced the Ottomans to establish an intelligence network that gathered information in a large geography. Nevertheless, in the war of information between the Ottomans and their rivals, the success of Ottoman information-gathering was intertwined with the efficiency of Ottoman counter-intelligence. In order to gain an advantage in “politics of information”, the Ottoman secret diplomacy successfully refused its enemies a comfort which it sought for itself: access to information about the adversary.