Which standard focuses on IT security techniques, including the introduction and general model, as well as functional and assurance components that define various operations?

The ISO standard 15408, also known as the Common Criteria for Information Technology Security Evaluation, is specifically designed to provide a framework for assessing the security properties of IT products and systems. This standard lays out a comprehensive model that includes functional components, which describe the security capabilities that a product or system is expected to provide, and assurance components, which detail the evaluation of these security capabilities based on defined criteria.

ISO 15408 is significant in the realm of IT security because it offers a structured approach for evaluating how well a system meets specified security requirements. This includes guidelines on how to introduce security techniques and the overall model for IT security evaluation. By providing an internationally recognized standard, ISO 15408 facilitates better security practices and encourages consistent methodologies in assessing the security of technology products across different environments.

In contrast, other standards mentioned have different focuses. For example, NIST 800-61 deals primarily with incident handling and response processes, while NIST 800-53 focuses on a comprehensive set of controls to manage security and privacy risks for information systems. COBIT emphasizes governance and management of enterprise IT, which, while related to security, does not specifically focus on the evaluation of security features in the same detailed manner as ISO 15408. Therefore