White hat hacker: refers to the people who defend the network technology. There are some other things that are highly accomplished with computer systems such as languages, TCP protocols, and so on. They are proficient in attack and defense, while the mind has a macro-awareness of the information security system.
Most of the time, hackers and their destructive behavior are antisocial. After the cult of the digital hero fades, the hacker's activities can easily be resented by people. In fact, the behavior of many hackers is to subvert the order of music, to the grandstanding is proud of. White hat hacker-it What businesses really need is a highly intelligent hacker, a distracted, it company that finds out what it really needs is its own nemesis, the most intelligent hacker on the Internet.
Hacker category
White hat: Refers to the network of technical defense people.
Grey cap: means a study of technology that understands if it is defensive and destructive. (But they don't usually do that)
Black Hat: You can't call it the hacker exactly. They specialize in virus Trojans. And the people who study the OS looking for bugs. These people are basically doing everything for money.