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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Major companies are also grappling with cybersecurity concerns. Taylor Croft, AJC.com, 21 June 2026 Funded by the National Science Foundation, our multidisciplinary team blended our expertise in causal inference, sustainability and cybersecurity, to work on the tangled question of what people do with their consumer electronics when they’re done using them. Eric Williams, Fortune, 21 June 2026 Designed to strengthen election integrity and foster leadership, the year-long program provides education on election administration, including election law, cybersecurity, information technology and operational best practices, the release said. Post-Tribune, Chicago Tribune, 21 June 2026 The administration issued an executive order earlier this month asking AI companies to voluntarily share their most advanced models with the government for cybersecurity vetting before releasing them publicly. Hadas Gold, CNN Money, 21 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 28 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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