Approach to Information Security Risk Assessment for a Class «1» Automated System

Abstract

The article is devoted to the assessment of information security risks in automated systems of class "1". An adapted approach to the assessment of information security risks in such automated systems using the Methodology and requirements of the standards of GSTU SUIB 1.0 / ISO / IEC 27001: 2010 and GSTU SUIB 2.0 / ISO / IEC 27002: 2010 is proposed. The efficiency and methods of implementation of the approach are proved on the example of consideration of real threats and vulnerabilities of class 1 automated systems. The main requirement for the creation of information security management system in the organization is risk assessment and identification of threats to information resources that are processed in information and telecommunications systems and speakers. The basic standards on information security in Ukraine are considered, which give general recommendations for the construction and assessment of information security risks within the ISMS. The most common methods and methodologies for assessing information security risks of international standard are analyzed, their advantages and disadvantages are identified. The order of carrying out of works on an estimation of risks of information security of the AS of a class "1" is defined. The vulnerabilities considered by the expert according to the standard ISO/IEC 27002:2005 and the Methodology are given. A conditional scale for determining the impact on the implementation of threats to integrity, accessibility, observation is given. Measures and means of counteracting the emergence of threats are proposed. This approach can be used both for direct information risk assessment and for educational purposes. It allows to get the final result regardless of the experience and qualifications of the specialist who conducts risk assessment, with the subsequent implementation and improvement of the existing risk management system in the organization.