We've mentioned before that the main group of hackers is young people, and in fact it is. In the 21st century, it is hard to see the old hacker over thirty years old on the Internet: many hackers generally "disappear" on the Internet in the future. Where did these people go? Why did they go? Actually these are easy to understand, as the growth of the age and mental maturity, the curiosity of young gradually out of them, they begin to step into a stable stage, the physical strength and energy began to fall, how can no longer stay up late, do not know tired. For example, starting to have a family burden, to make a living and a career. Because of the hacker industry, there are only a few professional hackers, and many are amateurs. They spend a lot of time and energy without pay. So it's also natural to quit "quack" when they're older. Of course, there are a lot of people who have been interested in their hacking career for a lifetime. Some of the hackers may go on to become security experts, anti-hacker experts and continue to study technology in the future. There are also people who do things that have nothing to do with hackers. The hackers were meant to be the workers who cut wood with axes, and the first to be introduced into the computer industry dates back to the 1960s. Computer at the university of California, Berkeley professor Brian Harvey this word once wrote in the textual research, then at the Massachusetts institute of technology (MIT) of the students are usually divided into two pie, it is a tool, means a mamma students, grades and grade a; The other is the so-called "hacker", who often skip classes and love to sleep in class, but at night, he likes to do extracurricular activities