• Journal of the Society of Disaster Information
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• v.11 no.3
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• pp.429-435
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• 2015

This study analyzes the changes of international terrorisms which are caused by IS through literature investigation, statistics and case analysis, and gives an understanding about recent trend of the terrorisms and aggressive method. Moreover, this study is for presenting a basic standard about an effective counterplan of the terrorisms. The results of this study are summarized as follows. First of all, there is a change of terrorism that homegrown terrorism grows into wolf-pack terrorism. Second, the terrorists show psychological terror by expanding their targets and using brutal and indiscriminate terrorism attacks. Third, the terrorists use networks of internet and SNS as a resource and as a tool for publicity activities of their groups. Forth, the terrorists have form of global organization through ties of other terrorists like middle-east or Africa.