EXPERIMENTAL ANALYSIS OF THE INTERNAL ATTACKS ON SCADA SYSTEMS

Authors : Erdal IRMAK, İsmail ERKEK, Mert Melih ÖZÇELİK

Pages : 216-230

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Publication Date : 2017-12-11

Article Type : Research Paper

Abstract :Supervisory control and data acquisition insert ignore into journalissuearticles values(SCADA); systems play important role in electrical power system which is one of the most critical infrastructures. They usually include digital controllers like PLCs to realize the automation of electromechanical processes and to accomplish the real time services. Ensuring a secure communication between these field devices and the command center is vital from the security point of view. Because the most vulnerable part of SCADA systems is their communication protocols, this work focuses on the weaknesses of SCADA systems against the internal cyber-attacks such as Denial of Service insert ignore into journalissuearticles values(DoS);, Man-in-the-Middle insert ignore into journalissuearticles values(MITM); and Replay. For this aim, a sample SCADA testbed environment has been designed at first and then the attacks mentioned above are tested on it. Experimental results show that although SCADA systems accomplish so me mission critical tasks, the protocols used in their communication systems still lack of crucial security measures. Therefore, some immediate precautions to mitigate the vulnerabilities are suggested at the end of study.
Keywords : SCADA, PLC Security, Cyber attacks, Counter measures