Annotation: The object of the study is the methodology of feasibility assesment and evaluation of the measures when designing physical protection systems of the objects of critical infrastructure based on a complex algorithm for planning investments in security technologies. This article deals with the modern method of planning and resource management of physical protection systems. The sectoral aspects of the security sphere are summarized and the methodology of evaluation of the capital investments in physical protection systems is outlined is considered and generalized. The obtained results are summarized in the proposed algorithm for planning and evaluation the effectiveness of investments in security technologies.