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Impacts from cyberattacks on mission capability of an embedded system and their mitigations vary according to the system’s application and constituents. To effectively respond to a cyber attack, the operator must be given proper context of how that attack impacts mission capability and performance. In this paper, we describe a novel approach toward developing and visualizing cyber situational awareness on embedded systems. The approach uses a mission decomposition model to derive component-level dependencies on mission functionality. This allows us to calculate a mission capability metric which indicates the relative ability to perform mission functionality while undergoing cyber duress in operation. Our approach provides the operator with traceable, concise information about system components, how they are affected by cyberattacks, and the impact on mission capability – allowing the operator to make …