Abstract
Critical infrastructures are essential for national security, economy, and public safety. As an important part of security protection, response strategy making provides useful countermeasures to reduce the impacts of cyberattacks. However, there have been few researches in this domain that investigate the cyberattack propagation within a station and the incident spreading process in the critical infrastructure network simultaneously, let along analyzing the relationships between security strategy making for a station and scheduling strategy for the critical infrastructure network. To tackle this problem, a hierarchical colored Petri net–based cyberattacks response strategy making approach for critical infrastructures is presented. In this approach, the relationships among cyberattacks, security measures, devices, functions, and station capacity are analyzed and described in a hierarchical way, and the system loss is calculated with the input of abnormal station capacities. Then, based on the above model, the security strategy making for a station and the scheduling strategy making for the critical infrastructure network are investigated in depth. Finally, the effectiveness of the proposed approach is demonstrated on a simulated water supply system.
Highlights
Critical infrastructures (CIs) are viewed as the foundation of crucial economic and social function, whose secure and reliable operation provides essential, continual good, or service to meet the country demand.[1]
Motivated by the above analysis, a hierarchical colored Petri net (HCPN)–based cyberattacks response strategy making approach for CIs is proposed in this article
The CI defenders need to perform the following operations: (1) making security strategy to prevent the authority compromise and capacity reduction within the station, (2) making scheduling strategy to prevent the incident propagating in the CI network, and (3) making policy to mitigate the negative impact on society
Summary
Critical infrastructures (CIs) are viewed as the foundation of crucial economic and social function, whose secure and reliable operation provides essential, continual good, or service to meet the country demand.[1]. Motivated by the above analysis, a hierarchical colored Petri net (HCPN)–based cyberattacks response strategy making approach for CIs is proposed in this article. It can be used to model the operation of a CI in a graphic way Based on this method, the cyber-physical interaction within a station and material dependence among stations are modeled, which are used to analyze the consequences due to cyberattacks and response strategy. Section ‘‘System modeling with HCPN’’ gives the definition and description of HCPN and uses HCPN to model the attack propagation in CIs. The generation of the attack response is analyzed in section ‘‘Optimal response strategy making.’’ Section ‘‘Simulation and result analysis’’ verifies the effectiveness of proposed approach, and the conclusions and remarks are provided in section ‘‘Conclusion.’’
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