The basic meaning of a hacker is a person with a skilled computer technology, but most of the media is used to refer to "hackers" as computer intruders. White hat hackers have the ability to disrupt computer security without malicious intent. White hats generally have clear definitions of ethics and often try to work with companies to improve identified vulnerabilities. Grey hat hackers for ethical and legal ambiguity. Black hat hackers: black hat hackers - often used to distinguish between black hat hackers and generally (positive) hackers who are rational. The term has been popular since 1983, presumably due to the use of similar pronunciation and the explanation of safe cracker, and it has been translated into a mixture of crime and hacker. Computer security hacks - using password cracking or brute force attack. Software decoder script child (activist hacker) For college graduates, the first big thing to do is to have a resume. So, what are the problems that college students should pay attention to in their resume writing?