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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The report separately confirmed a vendor cybersecurity breach that exposed personal information belonging to students and educators. Josh Davis, Baltimore Sun, 26 Feb. 2026 The new building is expected to expand research and hands-on learning in advanced aircraft design, propulsion systems, materials, cybersecurity, and autonomous flight systems. Cbs News Atlanta Digital Team, CBS News, 26 Feb. 2026 Mexico’s national digital agency didn’t comment on the breaches but said cybersecurity was a priority. Bloomberg, Mercury News, 25 Feb. 2026 Still, sentiment has been fragile in software and cybersecurity stocks this year as worries remain about the rapidly developing capabilities of AI products that could interfere with incumbent software vendors' businesses. Sean Conlon,pia Singh, CNBC, 25 Feb. 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 4 Mar. 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
Last Updated: - Updated example sentences
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