Introducing Systems Thinking as a Framework for Teaching and Assessing Threat Modeling Competency

• URL: http://arxiv.org/abs/2404.16632v1
• Date: Thu, 25 Apr 2024 14:21:15 GMT
• Title: Introducing Systems Thinking as a Framework for Teaching and Assessing Threat Modeling Competency
• Authors: Siddhant S. Joshi, Preeti Mukherjee, Kirsten A. Davis, James C. Davis,
• Abstract summary: We propose using systems thinking in conjunction with popular and industry-standard threat modeling frameworks like STRIDE for teaching and assessing threat modeling competency. Students who had both systems thinking and STRIDE instruction identified and attempted to mitigate component-level and systems-level threats.
• Score: 3.467282314524728
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Computing systems face diverse and substantial cybersecurity threats. To mitigate these cybersecurity threats, software engineers need to be competent in the skill of threat modeling. In industry and academia, there are many frameworks for teaching threat modeling, but our analysis of these frameworks suggests that (1) these approaches tend to be focused on component-level analysis rather than educating students to reason holistically about a system's cybersecurity, and (2) there is no rubric for assessing a student's threat modeling competency. To address these concerns, we propose using systems thinking in conjunction with popular and industry-standard threat modeling frameworks like STRIDE for teaching and assessing threat modeling competency. Prior studies suggest a holistic approach, like systems thinking, can help understand and mitigate cybersecurity threats. Thus, we developed and piloted two novel rubrics - one for assessing STRIDE threat modeling performance and the other for assessing systems thinking performance while conducting STRIDE. To conduct this study, we piloted the two rubrics mentioned above to assess threat model artifacts of students enrolled in an upper-level software engineering course at Purdue University in Fall 2021, Spring 2023, and Fall 2023. Students who had both systems thinking and STRIDE instruction identified and attempted to mitigate component-level as well as systems-level threats. Students with only STRIDE instruction tended to focus on identifying and mitigating component-level threats and discounted system-level threats. We contribute to engineering education by: (1) describing a new rubric for assessing threat modeling based on systems thinking; (2) identifying trends and blindspots in students' threat modeling approach; and (3) envisioning the benefits of integrating systems thinking in threat modeling teaching and assessment.

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