black hat

noun

Definition of black hat

: a hacker who infiltrates a computer system for malicious purposes (as to disable a website or uncover secret information) In one segment … Assange reflects on his work as a black hat hacker in the early 1990s, recalling wistfully how he and others hacked into the Pentagon's Security Coordination Center.— Kim Zetter — compare white hat

First Known Use of black hat

1990, in the meaning defined above

Keep scrolling for more

Learn More about black hat

Statistics for black hat

Look-up Popularity

Time Traveler for black hat

The first known use of black hat was in 1990

See more words from the same year

Comments on black hat

What made you want to look up black hat? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

concealment of treason or felony

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!