The APT attack is short for Advanced Persistent Threats. Like the name of it, it is very new and advanced attack and it does not have a particular pattern on process. Now, many companies try to mitigate it with some traditional security solutions, like anti-malware or Data Loss Prevention. However, practical prevention cannot be supported by them. In this paper, we report some characteristics of APT attacks and proposed a rough model of countermeasure. The characteristics are derived from analysis of the APT attack cases in Korea.
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