New mafias manage to stay in the economic system due to its opacity. Economic crimes - such as corruption, tax evasion, recycling - have been created by "honest" entrepreneurs in order to serve their own interests. These kinds of crime need permanent organizations, such as the "economic differential associations", which are made up by collusion, illegal businesses and dangerous relationships. Mafias enter the illegal areas of the legal market and they are but one of the players of the "system" of "white collar criminals".
Keywords: Economy, Mafias, Corruption, White collars system