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cybersecurity

American  
[sahy-ber-si-kyoor-i-tee] / ˌsaɪ bər sɪˈkjʊər ɪ ti /
Or cyber security

noun

  1. precautions taken to guard against crime that involves the internet, especially unauthorized access to computer systems and data connected to the internet.

  2. the state of being protected against such crime.


cybersecurity British  
/ ˌsaɪbəˌsɪˈkjʊərɪtɪ /

noun

  1. computing the state of being safe from electronic crime and the measures taken to achieve this

"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

Etymology

Origin of cybersecurity

First recorded in 1985–90; cyber- ( def. ) + security ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The investigation will be led by the Australian Signals Directorate, the country's cybersecurity agency.

From BBC Sep. 23, 2026

But he is also training cybersecurity professionals to spot scams and seeking paid speaking engagements.

From The Wall Street Journal Sep. 22, 2026

More than 60 have been approved, in fields including respiratory care, cybersecurity and water resource management.

From Los Angeles Times Sep. 19, 2026

He said news of the cyberattack "worm" that could hack into WeChat may in fact be "a good thing: identifying the issue, solving it, and patching the loophole ultimately benefits the advancement of cybersecurity".

From Barron's

More than 100 organizations around the world, including OpenAI and Anthropic, have signed an open letter calling for a global effort to "strengthen cyber defenses" against AI-powered cybersecurity threats.

From Barron's

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