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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At the heart of the story is Daniel (Josh O’Connor), a cybersecurity whistleblower, and his girlfriend, Jane (Eve Hewson), a former novice in a nunnery. Patrick Ryan, USA Today, 14 June 2026 The lifecycle pillar then operationalizes governance through requirements covering model selection, data quality, explainability, performance monitoring, human oversight, cybersecurity, and third-party risk. Mayra Rodriguez Valladares, Forbes.com, 14 June 2026 The models built on the release of Claude Mythos Preview, which captivated Wall Street and government officials with its advanced cybersecurity capabilities in April. Ashley Capoot, CNBC, 13 June 2026 The Fable model includes much stronger restrictions on the types of questions that users can ask, especially on issues related to cybersecurity and biology. Jared Perlo, NBC news, 13 June 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

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Cite this Entry

“Cybersecurity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cybersecurity. Accessed 15 Jun. 2026.

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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