Cyber Security Maintenance for SCADA Systems

To ensure a high security level in industrial systems over a period of time, maintenance is required. In this paper, we give an overview of security-related maintenance tasks incorporating new technologies employed in industrial control systems such as cloud computing but also new attack technologies such as GPS spoofing. We also provide a threat model that focuses on threats that materialize during the lifetime of an industrial system and that are typically not present during the commissioning phase. Furthermore, we show how the identified maintenance tasks can mitigate these threats.