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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According to a recent report from Israeli cybersecurity firm Gambit Security, hackers last month used Claude, the chatbot from Anthropic, to steal 150 gigabytes of data from Mexican government agencies. Los Angeles Times, 5 Mar. 2026 This also includes being in charge of the Coast Guard and the Federal Emergency Management Agency, and a prominent role in counter-terrorism, aviation security and cybersecurity. Ximena Bustillo, NPR, 5 Mar. 2026 Iran’s internet blackout has now lasted for more than five days, according to cybersecurity watchdog NetBlocks. Jasmine Green, NBC news, 5 Mar. 2026 The seven properties that Fortinet bought for $47 million are all across the street from the cybersecurity company’s Sunnyvale headquarters at 909 Kifer Road, documents filed on March 3 with the Santa Clara County Recorder’s Office show. George Avalos, Mercury News, 4 Mar. 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 9 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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