The article deals with traditional in Russian historiography issue of relationships of Decembrists with the Russian emperor in the context of the myth of secret societies. Alexander I was aware of the existence of secret societies in Russia and considered them as part of a European wide union. Besides, he was convinced that they were supported by some great officers of state and commanders in the empire. Consequently, Alexander I thought it impossible to struggle with world wide conspiracy organizations, which had taken deep root in his state.