white hat

[ hwahyt hat, wahyt ]
/ ˈʰwaɪt ˈhæt, ˈwaɪt /

noun Informal.

a virtuous hero, especially in a cowboy movie; good guy.
Digital Technology. a hacker who violates the security of a system with the knowledge and consent of the owner or developer in order to test the code, without malicious intent.
Compare black hat.

OTHER WORDS FROM white hat

white-hat, white-hat·ted, adjective

Example sentences from the Web for white hat

British Dictionary definitions for white hat

white hat

noun

informal
  1. a computer hacker who is hired by an organization to undertake nonmalicious hacking work in order to discover computer-security flaws
  2. (as modifier)a white-hat hacker Compare black hat