“…Cyber risks represent a major source of concern for several utility and industrial infrastructures, due to both the risk arising in individual infrastructures and that deriving from the interconnections and interdependencies among them, as shown in the papers by Kröger (2008) and by Maglaras et al (2018). Specific attention has been paid in the literature to power systems (see, e.g., the papers by Ericsson, 2010;Fovino, Guidi, Masera, & Stefanini, 2011;Onyeji, Bazilian, & Bronk, 2014;Sun, Hahn, & Liu, 2018), industrial control systems (dealt with in the papers by Cherdantseva et al, 2016;Ralston, Graham, & Hieb, 2007), and nuclear plants (as in the papers by Park, Suh, & Park, 2016;Shin, Son, & Heo, 2017). Whatever the specific infrastructure, securing it requires an investment in cybersecurity tools and policies.…”