IMPROVING THE RESILIENCE OF CYBER SECURITY DATA CENTERS TO CYBER-PHYSICAL ATTACKS

Abstract

The CPSRA tool provides a comprehensive approach to assessing cyber risks in Cyber-Physical Systems (CPS),
with a focus on railway systems. By constructing attack graphs and analyzing dependencies and centrality metrics,
the tool identifies critical vulnerabilities and prioritizes them based on cumulative risk. A real-world SCADAbased
test bed demonstrates its effectiveness in identifying high-risk paths involving key components like PLC
controllers, temperature sensors, and SCADA workstations. The tool emphasizes the importance of isolating IT
and OT environments to prevent lateral attacks, with centrality metrics like betweenness and closeness identifying
key system nodes that attackers could exploit. In risk mitigation, assets are categorized based on their impact on
confidentiality, integrity, and availability, with ICS environments prioritizing availability. The CPSRA tool’s
outputs provide valuable insights for vulnerability remediation and guide the securing of high-risk components.
Overall, it offers a dynamic risk analysis methodology that informs targeted cyber security strategies to enhance
system resilience against advanced persistent threats.