Mission-centric cyber security assessment of critical systems

We present a novel model-based, mission-centric approach to perform
cyber security assessments for evaluating the impact of low-level cyber events on high-level mission objectives.We demonstrate the benefits of our approach using a system model and attack trees specific to the command-and-control system of a spacecraft. Specifically, we demonstrate how our
approach enables a decision-maker to assess the security posture of the system, identify necessary mitigations and prioritize their deployment.