Some individuals attempt to make generalizations about criminals who use computers.
Teaching investigators that future criminals will fit into a static mold can mislead an investigation, potentially delaying or thwarting the apprehension of an offender. The brief article Computers don't commit electronic breaches. The answer to this question has many parts since you might encounter a criminal on Usenet, IRC, through e-mail, as a result of a computer intrusion, etc. In some cases, you may find a significant amount of information about the individual in question. However, in the majority of cases you will only have an IP address.