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white hat

noun, Informal.
a virtuous hero, especially in a cowboy movie; good guy.
Compare black hat (def 1).
Related forms
white-hat, white-hatted, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for white-hat
Historical Examples
British Dictionary definitions for white-hat

white hat

  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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for white-hat

a computer programmer hired to prevent illegal acts such as hacking a forbidden network or sending out a virus or worm; also, a computer expert, usually a former hacker, who now uses his or her skills for legitimate causes; also called white hat hacker

Word Origin

fr its use in western /cowboy movies

Usage Note

computing's 21st Century Lexicon
Copyright © 2003-2014, LLC
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Slang definitions & phrases for white-hat



A clown (1890s+ Circus)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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