依照目前计算机网络连接的拓扑结构和信息的载体,把计算机犯罪案件环境分为单机、互联网络和专用网络三种。因此,在不同计算机环境下作案相应可分为单机案件、互联网络案件和专用网络案件。计算机犯罪案件的侦查可按照计算机环境采用不同的侦查模式。单机犯罪案件侦查模式单机犯罪案件的特点单机是与其它计算机不相连的计算机,因此作案人在实施犯罪过程中必须与被侵害或使用的计算机直接接触;作案人员多数是能接触到计算机,并具有操作计算机能力的内部人员,如计算机管理者、操作人员和软件设计者;单机犯罪案件有明确的犯罪现场。单机犯罪案件的主要类型 In accordance with the current computer network topology and information carrier, the computer crime environment is divided into stand-alone, Internet and private networks three. Therefore, the crime in different computer environments can be divided into single cases, Internet cases and private network cases. The investigation of computer crime cases can adopt different investigation modes according to the computer environment. Single-machine crime detection mode Single-machine crime features Single computer is not connected with other computers, so perpetrators in the process of committing the crime must be infringed or used directly in contact with the computer; the majority of committing the crime is accessible to the computer and has Internal personnel operating computer capabilities, such as computer administrators, operators and software designers; stand-alone crime cases have a clear crime scene. The main types of stand-alone crime cases