The material scope of the research problem presented in the text encompasses the issues concerned with the possibilities for and limitations of recruiting secret collaborators by the Polish civilian intelligence service. The analysis of the problematics of secret collaboration focuses mainly on institutional and legal aspects, which can be seen in its inclusion in the systemic legal perspective, encompassing such dimensions as administrative and legal, criminal and legal, civil and legal, and ethical one. Next to the normative aspects, the text addresses sociological and psychological aspects of recruiting secret collaborators by special services, thereby depicting the main recruitment methods. The methodology adopted is chiefly based on the institutional and legal approach, in which use is made of, inter alia, textual, functional and systemic interpretations. The problem of possible abuse concerned with the recruitment of secret collaborators by special services is illustrated with an abstract case study and a relevant legal interpretation. Besides, to extend the analysis of psychological and sociological aspects of recruiting secret collaborators, the study uses limited open interviews with former officers of the civilian special services operating in Poland before 1990.