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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Swalwell sits on the Homeland Security committee and is the ranking member of its subcommittee on cybersecurity and infrastructure. Lia Russell, Sacbee.com, 15 Dec. 2025 More than 70% of them leverage AI in customer service, marketing, IT, product development, and cybersecurity, while 67% are monetizing industry-specific AI use cases to drive revenue growth. Charles Lamanna, Fortune, 15 Dec. 2025 Shares shed 4% after Bloomberg News , citing people familiar with the matter, reported that the software platform has engaged in talks to acquire cybersecurity firm Armis for around $7 billion. Liz Napolitano, CNBC, 15 Dec. 2025 Rex also talks with Todd about the rapidly changing technological landscape and the need for students to learn more about advancements in AI, cybersecurity and other areas of technological expertise that various industries sorely need. Arkansas Online, 12 Dec. 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

Browse Nearby Words

Cite this Entry

“Cybersecurity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cybersecurity. Accessed 21 Dec. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!