Advancement of Science and ICT depends upon the expansion connected with telecommunication sector. This sector is under developed caused by lack of deregulation along with open competition. The impact connected with cyber crime is not alarming Bangladesh because financial transactions never have yet been totally facilitated in on the internet. As soon seeing that financial transactions are allowed online computer crimes raises at an freakish rate unless the costa rica government acquires the instruments and infrastructure in order to avoid, detect and prosecute them. But our government still unaware of the actuality. Internet services provided throughout the local area network are liable to similar attacks along with intrusions by hackers more frequently when the protection level is inferior. Now a morning in Bangladesh some people send malicious mail to different foreign diplomatic Mission along with other VIPs which sometimes cause serious problem with the police and also with the government.