Terrorism , theft , robbery , snatching , robbery, etc. are all kinds of crimes around our society. In the same way, in today's modern world, various kinds of crimes are being committed in the world of computers. It is a computer crime to commit any illegal act directly or indirectly using computer hardware , software , network , resources , data or information. With the revolutionary change in computer, the amount of crime in this world is also increasing. Computer crimes are usually committed through a variety of networks , the Internet, and memory devices. These crimes damage a variety of business systems , personal security and even personal computers. The Association of Information Technology Professionals-AITP defines the following as computer crime. 1. The use, access, modification and destruction of hardware , software , data and network resources by anonymous persons ( The unauthorized use , access , modification and destruction of hardware, software, data, of network resources); 2. The unauthorized release of information; 3. The unauthorized copying of software; 4. Denying any end user access to his or her own hardware, software , data or network resources Using or conspiring to use computer or network resources to illegally obtain information or certain resources ( Using or conspiring to use computer or network resources to illegally obtain information or tangible property)