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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:

To manage the higher costs of using always-on AI agents for every employee, Cisco is using tools including a token-monitoring feature from Splunk, the cybersecurity and analytics company it bought in 2024.

From The Wall Street Journal Aug. 27, 2026

Shares of CrowdStrike Holdings were roaring after the cybersecurity company revealed a record-breaking quarter, one partially boosted by fears about the power of artificial intelligence.

From MarketWatch Aug. 26, 2026

“They may be even more stressed out about that,” said Peter Jackson, a privacy and cybersecurity attorney in Los Angeles, in an interview prior to the settlement announcement.

From Los Angeles Times Aug. 26, 2026

That’s one reason cybersecurity stocks like CrowdStrike have seen strong performance thisi year.

From MarketWatch Aug. 26, 2026

Why is quantum computing such a danger to cybersecurity?

From The Wall Street Journal Aug. 25, 2026

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