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hacker

C2
Fairly common

Pronunciation

UK

  • /hˈækə/

US

  • /ˈhækər/

Meanings

Noun

  1. a person who gains unauthorized access to computer systems

  2. a skilled computer programmer or technology enthusiast

Beyond the definition

The word "hacker" often makes people think of someone breaking into computer systems, and that is one common meaning. But the word did not start there. At first, it meant someone who loved computers, understood them deeply, and liked testing what they could do. You can think of that person as a digital tinkerer, taking things apart, learning how they work, and finding smart ways to improve them.

Today, "hacker" is used in a few different ways. "White hat" hackers are security experts who are allowed to test systems and find weak points before criminals do. "Black hat" hackers use the same kinds of skills for illegal acts, such as stealing data or damaging services. "Grey hat" hackers sit somewhere in the middle and may cross rules without clearly trying to cause harm. So when you hear the word, the situation matters a lot.

Examples

  1. 1

    Unauthorized access

    A hacker broke into the school's computer system.

  2. 2

    Data breach

    The company warned customers that hackers had stolen some personal data.

  3. 3

    Legal testing

    They hired an ethical hacker to test the app before launch.

    • Phraseethical hacker

      someone who tries to find security problems legally

  4. 4

    Website outage

    The website was offline for hours after a hacker attack.

    • Phrasehacker attack

      an attempt to enter or damage a computer system

More examples
  1. 5

    Tech culture

    At the programming conference, old-school hackers swapped ideas and built little tools for fun.

    • Domain

      in tech culture, an old-school hacker is a creative, skilled programmer

See also

Similar

  • computer intruder
  • cyberattacker
  • cybercriminal

Shades of meaning

  • black hat
  • script kiddie
  • hacktivist

Contrast

  • ethical hacker
  • penetration tester

Do not confuse

Used with (collocations)

  • hack into a system
  • malicious hacker
  • hacker group
  • hacker attack

Word family

Explore

Forms and spellings

2 forms open this card.

Main spelling

  • hackernoun

Forms

  • hackerspluralnoun