It has always been very important throughout the centuries for legislative institutions and police organizations to watch over different media and genres as instruments of conspiracy of criminals, members of organized crime, and terroristic groups in order to recognize conspiracy contents and to evaluate them systematically (intelligence work). With the help of special methods-design, it is possible to analyze the functions and strategies of this specific sometimes open or undercover used languages of Rotwelsch, Argot, Fenya, terrorist and Jihadi groups. A very significant example is the history of Jihadi Internet as a cyber-planning tool: single websites (until 2001), expansion and professionalization (2001–2007) and severe surveillance, distrust and new social media (after 2008 especially because of 9/11). Since it has become clear that the National Security Agency (NSA) conducts severe intelligence research in the field of E-mail-traffic and chats, the demand of crypto-programs has grown. It is better in this situation to return to face-to-face-communication. Legislative institutions and police have to study these functions and strategies in order to practice the best fitting counter-action against crime and terrorism.