In this research paper we have discussed about the phenomenon of Cyber terrorism and its growing impact in the current scenario. We have reviewed the laws and acts in various countries like US, UK, Canada, Australia and in India. We have also tried to review the Cyber terrorism from the aspect of the Indian IT Act 2000. We have carried out a comparative review of the various laws made by these individual countries to deal with the Cyber Terrorism. In the end we have concluded that The existing laws in various countries are not efficient to restrain the cyber crimes and, thus urging a need for implementing modifications through which these activities can be prevented. There is a need of international cooperation of nations to crack down the efficiency on the cyber crime.