The methodology for hardening SCADA security using countermeasure ordering

Abstract

In this paper, we considered that SCADA system has few authorized users and access control is one of the most important values for cyber security. We propose the method which reducing the success probability of attacker's penetration using ordered countermeasures. We assume that any system has two or more safety countermeasures for authentication. It follows that setting multiple countermeasures in chain and making a causal relationship before and after action. And then, we making an access procedure matrix for it and sharing them among authorized users. As doing so, we can prevent attacker's penetration and reduce risk level by hacking. © 2013 Springer Science+Business Media Dordrecht(Outside the USA).