cy·​ber·​se·​cu·​ri·​ty | \ ˈsī-bər-si-ˌkyu̇r-ə-tē How to pronounce cybersecurity (audio) \

Definition of cybersecurity

: 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 The film followed an eccentric team of cybersecurity specialists led by Redford who hire themselves out to test the vulnerability of companies’ computer systems. Michael Ordoña, Los Angeles Times, 7 Jan. 2022 Mace enlists the help of her London friend Khadijah (Lupita Nyong’o), ace cybersecurity expert. Michael Phillips,, 6 Jan. 2022 China Quality News, the news website supported by the State Administration for Market Regulation, reported Wednesday that the police in the southern Chinese city of Shenzhen cited Walmart for allegedly violating the country’s cybersecurity law. Liza Lin, WSJ, 6 Jan. 2022 BlackBerry, which is publicly traded on the New York Stock Exchange and is valued at more than $5 billion, now focuses on selling cybersecurity software. Khristopher J. Brooks, CBS News, 5 Jan. 2022 In reality, ransomware and other cybersecurity incidents are a revenue hit. Travis Hoyt, Forbes, 5 Jan. 2022 In July, the authorities stopped Didi from signing up new users and ordered app stores to remove its services pending a cybersecurity investigation. New York Times, 5 Jan. 2022 Google plans to buy the cybersecurity startup Siemplify for about $500 million, according to a report by Israeli tech news service CTech that cites unnamed sources. Jonathan Vanian, Fortune, 4 Jan. 2022 The company that used to make mobile phones now sells cybersecurity software to businesses and governments. Scott Nover, Quartz, 3 Jan. 2022

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cybersecurity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cybersecurity

1989, in the meaning defined above

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The first known use of cybersecurity was in 1989

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Statistics for cybersecurity

Last Updated

12 Jan 2022

Cite this Entry

“Cybersecurity.” Dictionary, Merriam-Webster, Accessed 17 Jan. 2022.

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More Definitions for cybersecurity


cy·​ber·​se·​cu·​ri·​ty | \ ˈsī-bər-si-ˈkyu̇r-ə-tē How to pronounce cybersecurity (audio) \

Legal Definition of cybersecurity

: measures taken to protect a computer or computer system (as on the Internet) against unauthorized access or attack


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