Description: The article describes an approach to the construction of infrastructure, use of software standards. Modern approaches to the formalization of the requirements of security guarantees (in accordance with ISO / IEC 15408) based on CASE-approach using formal notations. On the basis of the performed analysis, the most common notation to represent studies, a selection has been made notation of IT Trust to formalize the requirements of security guarantees. The work was developed a method of constructing the Assurance Case notation in the IT Trust on the basis of “vulnerability analysis”.
Keywords: information technology security, common criteria, safety justification, the justification of warranties, notation Toulmin, ASCAD, notation IT Trust