Originally Posted by SilentWolf
A hacker in my description is no more then a person so evil themselves and bored to death they have to mess up other's creations.
To some degree I would hvae to agree with that statement, although to a large extend it's a biased generalization.
Ontop of David's description of a 'hacker' or what he refered to as 'hackers' or 'crackers', I would classify them as someone who that for either educational, recreational or professional reasons practises evading/circumventing security of an particular information system, whether it be their own or some one else's.
SilentWolf (in my opinion) has typically identified a recreational 'cracker', and has expressed their opinion from the perspective of a victim.
Although I do think that many people neglect to acknoledge the professional 'cracker', someone who is self, or externally employed to steal, and/or to change information of a particular system.
Microsoft and other large internet based organisations would be V. familiar with this 'type' of 'cracker', I believe that someone stealing information and/or changing it could potentially be more devistating then someone maliciously destroying intelectual property (as distressing as it may be), especially in the corporate world.