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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What To Know The electricity and computing power needed to run AI systems are dependent on an abundance of resources, including computer chips, energy, cooling, data storage, cybersecurity and other needs. Aman Kidwai, MSNBC Newsweek, 4 Nov. 2025 Suman Raju was appointed CFO of Darktrace, a global AI cybersecurity provider. Sheryl Estrada, Fortune, 4 Nov. 2025 But Carol Harris, director of information technology and cybersecurity at the Government Accountability Office (GAO), says that to effectively improve the VA’s IT infrastructure, the department must fix longstanding issues across the office with analysis, workforce planning and purchasing efforts. Patricia Kime, USA Today, 4 Nov. 2025 By catching vulnerabilities early and offering precise fixes, Aardvark could shift cybersecurity from reactive defense to continuous, proactive protection. Neetika Walter, Interesting Engineering, 30 Oct. 2025 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 9 Nov. 2025.

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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