gray hat

[ grey-hat ]

nounComputers Informal.
  1. a hacker who violates the security of a system without true malicious intent but often without the prior knowledge or consent of the owner or developer, and who later reports system vulnerabilities to the authorities, sometimes for personal profit.

Origin of gray hat

First recorded in 2000–05; modeled after gray market
  • Also called gray hat hack·er .

Words Nearby gray hat Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use gray hat in a sentence

  • It had the effect of sea-water, and her gray hat, with its pale green wreath, framed the golden-gray of her hair.

    Marriage la mode | Mrs. Humphry Ward
  • He took off his broad-brimmed gray hat and stood holding it in both hands as he looked down at the body.

    Shaman | Robert Shea
  • I stopped at the nearest outfitting shop, bought a light-gray hat, and left the black one lying on a chair.

  • Jones' gray hat came pushing up between the dead snags; then his burly shoulders.

  • An arm, outstretched, supported his head, hidden under a soft gray hat.

    The Daughter of a Magnate | Frank H. Spearman