AbstractDiscussed the establishment of the computer network from the account is now experiencing rapid development of the four stages， It also showed the advantages and disadvantages of each period， the computer network of interpretation of some terms， such as : Computer networks are used communication lines and communications equipment， will be scattered in different locations and have a number of independent functional computer systems connectivity， In accordance with international standards for data network protocol communications， the network hardware， software， database resource sharing computer Principle computer network through different network operating systems and network protocol support has been functioning， as well as computer network system components， and how computer networks with the gradual deepening， Cyber Crime is becoming a common form of crime， the paper from the world of cyber-crime status， causes and the solutions to areas such as countermeasures discussed with a view to arouse social concern and hope that the legislative and judicial areas to further improve our existing network management system， thus the network to achieve effective crime prevention and On the future development made their viewsKeyword Network;Three stages;Hacker;Information superhighway
