A study on optimization of security function for reducing vulnerabilities in SCADA

One of the most significant current discussions in cyber security is cyber attack on supervisory control and data acquisition (SCADA). Stuxnet such as cyber-attacks on SCADA has become more precise and unique. In this paper, we describe the SCADA System and characteristics of cyber-attacks targeting on SCADA system. We also explain vulnerabilities of SCADA quantitatively. To this end, we proposed concept and methodology for reducing vulnerabilities of SCADA system by optimizing security functions.