초록

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Abstract ▼ AI-Helper

Recently, there has been a lot of studies and efforts to strengthen the stability of critical infrastructures against increasing cyber attacks to critical infrastructures. In this thesis, I defined what cyber threats are, after showing you various definitions about what cyber threats are and what th...

Recently, there has been a lot of studies and efforts to strengthen the stability of critical infrastructures against increasing cyber attacks to critical infrastructures. In this thesis, I defined what cyber threats are, after showing you various definitions about what cyber threats are and what the types are. After studying about significant cyber threats from China, I showed you the realities of cyber threats with the analysis about starting points, types of cyber threats, ratios of attacks and so on. At last, I defined guidelines about unnecessary oversea IP range blocking. Also, I proposed unnecessary oversea IP range blocking methodologies with per information system and per network system. Furthermore, I proposed blocking characteristics per security equipment and security operation improvement and blocking effects and service process to normal oversea users.

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