cybersecurity

noun

cy·​ber·​se·​cu·​ri·​ty ˈsī-bər-si-ˌkyu̇r-ə-tē How to pronounce cybersecurity (audio)
: measures taken to protect a computer or computer system (as on the Internet) against unauthorized access or attack

Examples of cybersecurity in a Sentence

Recent Examples on the Web
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Meanwhile, Deloitte will contribute Silent Shield, a cybersecurity system intended to detect unusual activity and potential intrusions through near-real-time analysis. — Neetika Walter, Interesting Engineering, 21 Oct. 2026 Like Heartbleed, the researchers at Wiz say PHP2Shell could similarly serve as a turning point in cybersecurity. — Lisa Eadicicco, CNN Money, 21 Oct. 2026 Previously, Manni served as SVP of product engineering at cybersecurity and risk management company DTEX Systems. — John Kell, Fortune, 21 Oct. 2026 Meanwhile, some of the tools that have emerged from AI safety research—like monitoring AI’s chains of thought—are of use to cybersecurity professionals, Korman acknowledges. — Harry Booth, Time, 20 Oct. 2026 See All Example Sentences for cybersecurity

Word History

First Known Use

1989, in the meaning defined above

Time Traveler
The first known use of cybersecurity was in 1989

Rhymes for cybersecurity

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Browse Nearby Words

cybersafety
cybersecurity
cybersex
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Cite this Entry

“Cybersecurity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cybersecurity. Accessed 22 Oct. 2026.

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Legal Definition

cybersecurity

noun
cy·​ber·​se·​cu·​ri·​ty ˈsī-bər-si-ˈkyu̇r-ə-tē How to pronounce cybersecurity (audio)
: measures taken to protect a computer or computer system (as on the Internet) against unauthorized access or attack
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