Abstract: Corruption became a significant global issue in the last 20 years. It happened due to transition and integration of post-communist countries with the assistance of extensive financial aid provided by the most developed countries. Researcher order to preventing from siphoning such money, post-communist countries have been forced to develop, adopt and introduce national anti and counter-corruption strategies. In essence such strategies can be constructed with the assistance of the fuzzy logic due to the complexity of environment which they ought to be implemented in and due to the vagueness of corruption as a phenomenon. So, counter corruption effort can be simulated by fuzzy models which are composed of two parts, an audit provided by experts and a strategy chosen by the ruling government. Both parts should be in synergy in order to prevent from developing of small corruption into system corruption which has a significant potential to terminate democracy and harm the national economy.