Mission-aware time-dependent cyber asset criticality and resilience

Determining mission-aware criticality, dependency, and resilience of cyber assets is required to support mission assurance in cyber defense and continuous operation of networks. This paper addresses the characterization of mission-aware asset criticality and the real-time dependencies of assets, services, tasks, and missions using Time Petri Nets and impact dependency graphs. In order to assess whether a system is resilient enough to keep supporting mission assurance in the face of cyber attacks, this paper introduces a new approach to determining whether the required resources will be available at the required time intervals. This approach leads to a better assessment of whether missions can be accomplished in a given time window over a mission-oriented network.