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

Shares fell 18% to $127.98 on Thursday after Accenture posted fiscal third-quarter results and announced a string of acquisitions aimed at expanding its cybersecurity business.

From Barron's • Jun. 22, 2026

In July 2024, CrowdStrike Holdings pushed out an update to its cybersecurity software that took down more than eight million Windows computers.

From Barron's • Jun. 19, 2026

Another source of concern for investors is that the company said it plans to acquire a majority stake in operational-technology company Dragos, as well as “all of runZero and NetRise,” two other cybersecurity companies.

From MarketWatch • Jun. 18, 2026

Modern hackers increasingly use these networks to steal the login credentials their victims use for cloud-computing services, said Adam Meyers, a senior vice president with the cybersecurity firm CrowdStrike.

From The Wall Street Journal • Jun. 18, 2026

Within a month more than 700 were hacked, according to the cybersecurity firm Xlab.

From The Wall Street Journal • Jun. 17, 2026