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 audit from Mautino also identified weaknesses in the IFA’s cybersecurity programs and control of confidential information. Jeremy Gorner, Chicago Tribune, 3 May 2026 This cybersecurity defense competition challenges students to take on the role of IT professionals defending computer systems from cyber threats. Tracy Trobridge, Baltimore Sun, 3 May 2026 In November 2025, cybersecurity firm Proofpoint released a report on the same topic, adding that hackers were mainly going after trucking and logistics firms, mainly in the food and beverage industry. Will McCurdy, PC Magazine, 2 May 2026 Wolfe initiates Rubrik as outperform Wolfe says the cybersecurity company is firing on all cylinders. Michael Bloom, CNBC, 1 May 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 5 May. 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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