Cyber security in Smart Grid stations

We are currently faced with the need of modernization of the electrical energy system, which means that an Monitor and Control (M&C) information network eventually will overlay the entire electric power network (generation, transmission, distribution and customer). Smart Grid environments like SCADA have historically focused on physical isolation and protection of equipment, and less focus on hardening the system with the best ICT security technology available. The Stuxnet virus was a reminder that physical isolation is not a guarantee against unauthorized access to SCADA equipment. This paper describes some of the technology and standards that are available and that should be applied in Smart Grid networks, and a migration strategy for reaching those goals is described.