Criminal profiling is an extremely important aspect of law enforcement, whether in the real or cyber world. Researchers and psychologists have spent their lives studying and cataloguing criminal behaviour and background. Using statistics and comparative analysis, information gathered from all over the country is processed and used to make discrete criminal profiles. Of course, the main problem is that having too rigid and specific a system will leave out a variety of criminals who simply do not fit the profile, hence making preemptive action much more difficult. On the other hand, too much flexibility or generalizations will make it difficult to have clear definitions of particular criminal types, making the profiling system useless. Clearly, a balance has to be struck. In this section, we have tried to be as general as possible so as to accommodate and elaborate on the most common cybercriminal types.

It is a common perception that only those who are lower down the social ladder and are in perpetual financial difficulty commit crime. In reality, it is equally likely for someone who has enough money to desire more. Qualified enough to know how to commit a variety of complex crimes and educated enough to know what the law can and cannot do, often, such criminals are actually a much greater potential threat than is usually believed.
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A relatively small percentage of all cybercrimes are committed by individuals who do not have any clear motive but have no sense of control over their actions. Criminals who clearly have no sense of judgment or rational thinking are labeled as psychiatric cases. Laws in most countries are usually more lenient with regard to such individuals but this does not mean that there is nothing to fear. Paedophiles, cyberstalkers and fanatic cyberterrorists often belong to this category.
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They are perhaps, the most cunning and deceitful type of cybercriminals. They are like chameleons, being able to mould their personality and behavior as and when they like, to cheat their unsuspecting victims of their money. However, not all con artists are in this game for monitory gains alone …
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This usually pervades in hacker milieus where the strength literally lies in numbers. Some hackers break into systems just to prove their capabilities to their counterparts. Moreover, by encouraging and daring one another to go on further, groups of hackers cause far more harm than each one would individually. Others hack to help others out of a seemingly “dogmatic” system. Cybercriminals may also commit crimes simply to seek some attention from authority or family members. Teenagers characteristically belong in this group.
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This term generally refers to people who infringe copyrights for the benefit of those refuse to pay for copyrighted materials, such a software and music.
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Reference

Criminal profiling: How it started and how it is used
http://www.crimelibrary.com/criminology/criminalprofiling2/

A Computer Forensic Methodology
http://www.ncirl.ie/Research/working_papers/NCIRL-012-2003.doc