A study on evaluating Insider Threats and fighting against Insider attacks in Cyber Systems

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In cyber systems, we never assume attackers to come from outside. We shall consider serious threats by a system manager and the information leakage via some insiders. We have some published research reports about insider threats on Government networks or banking systems, whereas we do not know so much about insider attacks in recent new cyber systems including social networking or cloud computing services. This research investigates how to modeling insider attacks in cyber security and classify the type of attacks. Also we discuss the limitation of out known protection, and consider new ways of fighting against such insider attacks.