Along with the modernization and widespread usage of Internet, the security of the mankind has become one of the major issues today. The threat of human society from the terrorists is the challenge faced dominantly. Advancement in the technology has not only helped the common people for the growth but also these inhuman people to adversely affect the society with sophisticated techniques. In this regard, the law-enforcement agencies are aiming to prevent future attacks. To do so, the terrorist networks are being analyzed and detected. To achieve this, the law enforcement agencies are using data mining techniques as one of the effective solution. One such technique of data mining is Social network analysis which studies terrorist networks for the identification of relationships and associations that may exist between terrorist nodes. Terrorist activities can also be detected by means of analyzing Web traffic content. This paper studies social network analysis, web traffic content and explores various ways for identifying terrorist activities.