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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Iran’s digital blackout has entered its 27th day, according to NetBlocks, a cybersecurity watchdog. Rebecca Shabad, NBC news, 26 Mar. 2026 According to a recent investigation by cybersecurity firm Gen Threat Labs, more than 18,000 OpenClaw instances are already exposed to internet attacks, and almost 15 percent of them contain malicious instructions. Victor Tangermann, Futurism, 26 Mar. 2026 Several states, including New York and Connecticut, have taken further action, enshrining new bills in 2025 and 2026 mandating hospitals develop specific cybersecurity plans to protect patients. Jeffrey Tully, Fortune, 26 Mar. 2026 That's as the DHS shutdown has now lasted 40 days, and federal employees who handle airport security, disaster response and cybersecurity go without pay. Barbara Sprunt, NPR, 25 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 30 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
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