| Breach of data security: | Information stored on network or computers is altered by attackers. |
| Breach of operations security: | Attackers take advantage of vulnerabilities within daily procedures to access or alter information through methods like password sniffing. |
| Breach of personnel security: | Sensitive company information is gained from an employee by attackers |
| Breach of communication security: | Information is being intercepted or altered on the way across a network. |
| Breach of physical security: | Attackers gain access to a building or to computer/networking hardware. |
| Computer as an instrument. | Attackers use computers to steal or commit fraud. |
| Crimes associated with the prevalence of computers. | Attackers illegally use or sell computer components, software and information. |
| Computer as the target. | Attackers disrupt or damage computers and networks, or steal data stored on computers. |
| Computer as incidental to other crimes. | Attackers may use computers to facilitate crime or to make crime difficult to detect. |