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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These steps seem costly, but so did cybersecurity preparation before ransomware threats became routine. Victor Nian, Fortune, 10 May 2026 The system, which is used nationwide at the university, high school, and elementary school levels for online exams and teacher communication, has been restored, but cybersecurity teams are continuing to investigate the situation. Marybel Rodriguez, CBS News, 9 May 2026 The cybersecurity and cloud computing company is benefiting from the surge in investment in artificial-intelligence technology. Stan Choe, Los Angeles Times, 8 May 2026 The attack is likely AI-assisted, and is a harbinger of cybersecurity’s chaotic future. Tom Chivers, semafor.com, 8 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 11 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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