TY - JOUR T1 - A Malicious Traffic Detection Method Using X-means Clustering AU - Han, Myoungji AU - Lim, Jihyuk AU - Choi, Junyong AU - Kim, Hyunjoon AU - Seo, Jungjoo AU - Yu, Cheol AU - Kim, Sung-Ryul AU - Park, Kunsoo JO - Journal of KIISE, JOK PY - 2014 DA - 2014/9/14 DO - KW - malicious traffic KW - DDoS attack KW - botnet KW - clustering KW - metrics AB - Malicious traffic, such as DDoS attack and botnet communications, refers to traffic that is generated for the purpose of disturbing internet networks or harming certain networks, servers, or hosts. As malicious traffic has been constantly evolving in terms of both quality and quantity, there have been many researches fighting against it. In this paper, we propose an effective malicious traffic detection method that exploits the X-means clustering algorithm. We also suggest how to analyze statistical characteristics of malicious traffic and to define metrics that are used when clustering. Finally, we verify effectiveness of our method by experiments with two released traffic data.