The purpose of this article is to analyze the current cyber security and defense policies in Brazil, Argentina and Colombia, that have the higher density of internauts, placing these policies in the context of two regional forums: the Organization of American States (OAS) and the Union of South American Nations (UNASUR), and the possible existence of an interdependence among them or if a new cyberspace geopolitics is being framed in the region, that influences the organization of regional power.