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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Cybersecurity and Infrastructure Security Agency encourages organizations to heighten their cybersecurity vigilance during periods of elevated geopolitical risk. William Akoto, The Conversation, 2 Apr. 2026 TeamPCP is thought to have recently begun collaborating with Lapsus$ as well as other groups that specialize in ransomware and extortion, according to security researchers from the cybersecurity firm Wiz quoted in a story in Infosecurity Magazine. Beatrice Nolan, Fortune, 2 Apr. 2026 The grant program will allow local and state agencies to increase police and emergency presence at stadiums, hotels and transportation hubs, while also supporting training exercises, background checks and stronger cybersecurity protections. Christopher Harris, CBS News, 1 Apr. 2026 The extent of layoffs has not been announced by Oracle, but people were posting online about their firings, many of whom held positions in software engineering and cybersecurity. USA Today, 1 Apr. 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 3 Apr. 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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