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white hat

[hwahyt hat, wahyt]
noun Informal.
  1. a virtuous hero, especially in a cowboy movie; good guy.
  2. 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.
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Compare black hat.
Related formswhite-hat, white-hat·ted, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for white hat

likable, amiable, easygoing, charming, pleasant, attractive, affable, gregarious, aces, agreeable, nice, okay, pleasing, presentable, sweetheart, winning

Examples from the Web for white hat

Historical Examples of white hat

  • I casually looked round, and saw "White-hat" wink at-an officer, and point significantly to my handkerchief.

    The Fortunes of Hector O'Halloran, And His Man Mark Antony O'Toole

    W. H. Maxwell

  • And so saying, he of the white-hat and jeans coat stepped forward to the bar, and placed a couple of dollars upon the counter.

    The Quadroon

    Mayne Reid


British Dictionary definitions for white hat

white hat

noun
  1. 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
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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