A person who breaks into a computer system with the purpose of inflicting damage or stealing data. In other words, a "bad guy." Contrast with white hat hacker and blue hat hacker.
"black hat hacker." YourDictionary, n.d. Web. 27 May 2018. <http://www.yourdictionary.com/black-hat-hacker>.
black hat hacker. (n.d.). Retrieved May 27th, 2018, from http://www.yourdictionary.com/black-hat-hacker