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.

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cybersecurity British  

/ ˌsaɪbəˌsɪˈkjʊərɪtɪ /

noun

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

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Etymology

Origin of cybersecurity

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

Example Sentences

See Examples For:

cybersecurity

Total funding for cybersecurity startups reached $12.7 billion by the end of September, surpassing full-year totals going back to 2020.

From The Wall Street Journal ● Oct. 8, 2026

Seth Spergel, a managing partner at cybersecurity investor Merlin Ventures, said much of the momentum this year springs from the emergence of frontier AI models capable of detecting security vulnerabilities at lightning speeds.

From The Wall Street Journal ● Oct. 8, 2026

The best-performing stock of the five this year has been cybersecurity group CrowdStrike, which has soared 138% over worries about too-powerful AI models.

From MarketWatch ● Oct. 7, 2026

Human identity doesn’t change,” said Jay Chaudhry, founder and CEO of cybersecurity company Zscaler.

From The Wall Street Journal ● Oct. 6, 2026

Zscaler stock rises after the cybersecurity company reaffirms its fiscal 2027 guidance at its annual investor day.

From Barron's ● Oct. 6, 2026