cy·ber·se·cu·ri·ty | \ˈsī-bər-si-ˌkyu̇r-ə-tē \

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 data breach that Ticketmaster revealed in June is part of a larger credit card-skimming operation that has hit more than 800 e-commerce sites across the internet, according to cybersecurity firm RiskIQ. Jacob Taylor /, NBC News, "Ticketmaster data theft part of larger credit card scheme, security firm says," 10 July 2018 But a local election in Tennessee last week highlights the concern: Knox County has hired a cybersecurity firm to investigate why a website that reports election results crashed after the polls closed. The Washington Post,, "Oliver North slated to become president of the NRA," 7 May 2018 In February, the SEC published a formal statement that officially codified something that any competent executive should have known long ago: cybersecurity risks and issues are material events that are subject to insider-trading laws. Dan Goodin, Ars Technica, "Senior ex-Equifax executive charged with insider trading," 14 Mar. 2018 In July 2016, a loose-knit community of computer scientists and cybersecurity experts discovered a strange pattern of online traffic between two computer servers. Jonathan Chait, Daily Intelligencer, "Will Trump Be Meeting With His Counterpart — Or His Handler?," 8 July 2018 One former Air Force officer Mr. Touhill worked with is now head of cybersecurity at a large health care provider. Adam Janofsky And Kim S. Nash, WSJ, "How Companies Can Bridge the Culture Gap When Hiring Ex-Military Cybersecurity Professionals," 5 July 2018 In addition, Michigan state government is among the leaders in the country on addressing the importance of cybersecurity. Carol Cain, Detroit Free Press, "Sue Snyder: What it's like to be Michigan's first lady," 23 June 2018 The conference comes just days after President Donald Trump eliminated the position of national cybersecurity coordinator. Steve Bousquet, miamiherald, "Russian hackers, long lines: What Florida elections officials are talking about | Miami Herald," 21 May 2018 On Monday, Rob Joyce, the White House cybersecurity coordinator, also stepped down. Abigail Tracy, The Hive, "“Bolton Is Not a Big Team Player”: Inside the Looming Bolton-Pompeo Showdown," 20 Apr. 2018

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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Last Updated

19 Oct 2018

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The first known use of cybersecurity was in 1989

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cy·ber·se·cu·ri·ty | \ˈsī-bər-si-ˈkyu̇r-ə-tē \

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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exaggeratedly or childishly emotional

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