The automotive industry is undergoing significant changes due to increased connectivity, data usage, and vehicle autonomy, which pose new challenges and increase the attack surface of vehicles. To effectively address these challenges, all design tasks in automotive projects need to be well-coordinated and prioritize vehicle security.

Model-Based Systems Engineering (MBSE) provides a comprehensive approach that allows multiple engineering disciplines to work concurrently. In this study, we propose the integration of well-established security solutions, such as Security Patterns, into safety-critical automotive systems using the MBSE approach.

Our work presents a procedural flow for incorporating Security Patterns into the system model, emphasizing the inclusion of cybersecurity (CySe) and functional safety (FS) actions. To meet the regulatory requirements of UNR155, we selected the Intrusion Detection System (IDS) pattern as a key component of our proposed Cybersafety Design Framework.

In a real-world case study of an Advanced Emergency Braking System (AEBS), we evaluated the effectiveness of our framework by integrating the IDS pattern. Our results demonstrate the feasibility of merging design processes within an MBSE framework, reducing design effort and aligning with the security by design principle.