These ethical hackers—also known as "white hat hackers"—use the same techniques as regular hackers, but their goal is different: to improve security. Many of the world's top tech companies ...

Teenage hacker Sam Curry from Nebraska earns about $100,000 a year by working 20 hours a week. He's a 'white hat' hacker, which means companies pay him, and others like him, to hack their websites ...