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Abstract-The use of SCADA systems has been increased since the 1960s as a need arose to more efficiently monitor and control the status of remote equipment. And they are becoming more and more susceptible to cyber-attacks due to utilize standard protocols and increase connectivity. The objective of this paper is to introduce our on-going work and discuss challenges and opportunities for preventing network and application protocol attacks on SCADA systems.

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Internet of Things (IoT) consists of several tiny devices connected together to form a collaborative computing environment. Recently IoT technologies begin to merge with supervisory control and data acquisition (SCADA) sensor networks to more efficiently gather and analyze real-time data from sensors in industrial environments. But SCADA sensor networks are becoming more and more vulnerable to cyber-attacks due to increased connectivity. To safely adopt IoT technologies in the SCADA environments, it is important to improve the security of SCADA sensor networks. In this paper we propose a multiple filtering technique based on whitelists to detect illegitimate packets. Our proposed system detects the traffic of network and application protocol attacks with a set of whitelists collected from normal traffic.

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