With the widespread concerns about cyber terrorism and the frequent use of the term “cyber terrorism” at the present time, many international organisations have made efforts to combat this threat. Since cyber terrorism is an international crime, local regulations alone are not able to defend against such attacks; they require a transnational response. Therefore, an attacked country will invoke international law to seek justice for any damage caused, through the exercise of universal jurisdiction. Without the aid of international organisations, it is difficult to prevent cyber terrorism. At the same time, international organisations determine which state court, or international court, has the authority to settle a dispute. The objective of this paper is to analyse and review the effectiveness and sufficiency of the current global responses to cyber terrorism through the exercise of international jurisdiction. This article also touches upon the notion of cyber terrorism as a transnational crime and an international threat; thus, national regulations alone cannot prevent it. The need for an international organisation to prevent and defend nations from cyber terrorism attacks is pressing. This paper finds that, as cyber terrorism is a transnational crime, it should be subjected to universal jurisdiction through multinational cooperation, and this would be the most suitable method to counter future transnational crimes such as cyber terrorism.