Cyber terrorism is a phenomenon that is gaining more and more attention. One reason for this is the concern that modern information and communications technology may be used in order to harm open societies. This concern also involves actual IT systems and the information generated being targets of advanced attacks. That way functions that are important to society could be affected. The term ‘cyber terrorism’ is complex. This article describes the difference between traditional and cyber terrorism. The main focus is on how the al-Qaeda terrorist network acts in cyberspace and how their change in concentration and activities has made them a clever player in an electronic Jihad.