People generally assume some kind of cybercriminal when they hear the word hacker. But actually, the word hacker has a lot more to do than what people generally assume it to be. Hackers are generally categorized into three kinds. They are Black Hat, Grey Hat, and White Hat.
Black Hat
These are the guys people think of when they hear the word hacker. These are the Bad Guys, they use their power and intelligence to make money through illegal ways. Whenever they find a vulnerability, they misuse it for their own benefit and do not let the owners know about the threat and vulnerability. Black hat hackers try to steal users’ passwords, emails, and other personal details and sell them on Dark Web.
Gray Hat
Gray hats fall in between the Black and White hat hackers. These are the guys who find vulnerabilities and disclose them to the government, intelligence agencies, or sometimes the military. The government then uses this information to hack into an agency or criminal group. They can be individuals or researchers in pursuit of bugs and flaws which might be useful for the government.
White Hat
White hat hackers are the good guys, they hack into a network or hack software and then notify the respective owner about the bugs that need fixing. They help to build the better and safer software possible. They make money in form of bug bounties which they receive whenever they notify a company about a certain vulnerability. The pay varies depending on the severity of the flaw found, however, they can make anywhere between $500 to more than $100,000.