I am not talking about greedy individuals. Rather, people who hack for financial gain. This does not mean that fame seeking hackers can be disregarded, far from it. This is referring instead to the caliber of the attacks, not the number of or the manpower spent in preventing. Think of it this way; a person eats a lot of apples in his life, he washes them off before eating to protect himself from pesticides. But it's the rotten ones he really wants to avoid. The same is true for our networks. We take precautions to protect us from the known dangers, which are somewhat harmless with those precautions in place. But we really want to avoid those nasty attacks. The attacks that may present hitherto unknown dangers, the ones that can do a lot of damage. .
Hackers that are "in it for the money" can be professionals with sophisticated methods of attack. They may be hired by rival companies, or governments. A true professional makes his own hacking scripts, and therefore it may be harder to anticipate the method in which the attack will be carried out. They know the value of being completely anonymous, to be completely unrelated to this kind of activity in their public life. This is why this type of individual is far more dangerous. On the other hand, this caliber of attack constitutes only a small portion of the incidents of recorded hacking. This may be because there are fewer people to carry out a high level attack, the targets are suited better by not reporting the incident, or they just don't get caught. Not all of the monetarily inclined attacks are committed by knowledgeable persons. For these others, we will group them with the fame seekers, since they fit that description better.
The fame seekers. In my eyes, the hackers seeking fame are the dumbest of the bunch. Whether in a feeling of inadequacy or it's just the thing to do, hackers seeking fame usually are not hackers at all. They are rather, "script kiddies" .