Hit 'em where it hurts: a live security exercise on cyber situational awareness
Proceedings of the 27th Annual Computer Security Applications Conference
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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.