cybersecurity

American  

[sahy-ber-si-kyoor-i-tee] / ˌsaɪ bər sɪˈkyʊər 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

Not long after, Brundage was chatting online with an anonymous cybersecurity researcher who then introduced him to Chris Formosa, an engineer at the networking company Lumen.

From The Wall Street Journal • Apr. 3, 2026

Microsoft plans to invest $10 billion in artificial-intelligence infrastructure and cybersecurity in Japan over the next four years.

From Barron's • Apr. 3, 2026

In a blog post last week, Google encouraged enterprises to bulk up their cybersecurity measures to avoid getting left behind.

From Barron's • Apr. 1, 2026

When the district’s cybersecurity team reached out to a small sample of commenters to verify their identities, a majority of respondents said that they had not submitted the comments in their names.

From Los Angeles Times • Apr. 1, 2026

However, in the case of Lightway, ExpressVPN made the core code open-source and it has been reviewed by the independent cybersecurity firm, Cure53.

From Salon • Mar. 13, 2026