Cyber crime is an enormous threat in the era of information technology in the 21st century. It is such kind of unrestrained crime which cannot be confined within society, time, and place. Even a criminal can commit a crime without physical attachment. Though the penchants of committing cyber crime instigated from society but it is entirely dissimilar from customary crimes. While developed countries coped new technologies with time but developing countries take times to adjust. Time is needed to generate new laws and regulations according to the latest technologies. Because of this gap between new technology and law making, criminals get opportunity to commit crimes. Cyber crimes have been expanded in Bangladesh recently, as student of Peace and Conflict Studies we have tried to present how cyber crime is threat on peace. We have made an effort to present this situation in our book from academic point of view.