Advanced Persistent Threat (APT) attacks are complex, employing diverse attack elements and increasingly intelligent techniques. This paper introduces a tool for security risk assessment specifically designed for these attacks. This tool assists security teams in systematically analyzing APT attacks to derive adaptive security requirements for mission-critical target systems. Additionally, the tool facilitates the assessment of security risks, providing a comprehensive understanding of their impact on target systems. By leveraging this tool, security teams can enhance defense strategies, mitigating potential threats and ensuring the security of target systems.
This work ' 'was supported \\ 3 by the CBK21 (+* ?FOUR 0& program \ of the /National Research ?Foundation of (Korea funded 3by the 8 Ministry of Education 1/(NRF5?=*FF1999FF*G*<910140GF*91) 2and the \u03b1Institute of \u03b1Information 9& .Communications Technology Planning 9& Evaluation 1\u03b1(IITP) \u03b1 2 under the Artificial \u03b1Intelligence .Convergence \u03b1Innovation Human Resources !Devel \opment 1(IITP\u03b1\u03b1 +-2023-RS-G+: +G2023-00255968) +: GG+==F>H2 grant funded 3by (Korea 18 (MSIT). \u03b1 2#