Computer-related crime is defined as any statutorily proscribed behavior that is assisted by or requires the knowledge of computer technology. Criminological characteristics generally associated with computer-related crime include low visibility, reluctance on the part of victims to report the crime, large losses, telecommunication ability to commit crime over long distances, commitment of the crime in as little as 3 milliseconds, and low risk of discovery and prosecution. Persons who are prosecuted are usually not severely punished, prosecution is often difficult under existing laws, and explanations of technological crimes to juries is difficult. Issues discussed include methods used in committing computer-related crimes, the importance of crime scene preplanning, and crime scene procedures. The importance of investigator training, obtaining victims' cooperation, and identifying and seizing evidence is highlighted. 10 footnotes and 88 references.