Challenges and Direction toward Secure Communication in the SCADA System

In the past few years the security issues in the supervisory control and data acquisition (SCADA) system have been investigated, and many security mechanisms have been proposed from research communities. The international standard organizations also have published several standard documents for secured SCADA systems. In this paper we explain the technological challenges for the SCADA security and overview the approaches which address these challenges. Then we focus on the security protocol which has been proposed in the SCADA cyber security initiatives and implementation issues when the both security function and the communication function are implemented on the embedded system devices in future power grid including the SCADA network.