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 group said that fewer than 10 U.S. government agencies and an unspecified number of companies were affected by the cyberattack, which analysts have described as one of the most catastrophic cybersecurity incidents in recent history. Jonathan Vanian, Fortune, "FBI, CIA, and NSA: Russia was likely behind major SolarWinds hack," 6 Jan. 2021 These days, Clarke is chairman of Good Harbor, a cybersecurity consulting company. CBS News, "The threats arising from the massive SolarWinds hack," 3 Jan. 2021 But the cybersecurity arm of the Department of Homeland Security concluded the hackers worked through other channels, too. New York Times, "As Understanding of Russian Hacking Grows, So Does Alarm," 2 Jan. 2021 Ten different courses are included with instruction from some of the most knowledgeable teachers in the cybersecurity field. Popular Science, "21 for ’21: Deals on classes that can give you new knowledge in the new year," 1 Jan. 2021 Galperin says a big challenge of getting lawmakers interested in the problem is that cybersecurity debates orbit around questions of national security, not threats to individuals. Mélissa Godin, Time, "How Domestic Abusers Have Exploited Technology During the Pandemic," 31 Dec. 2020 The statements likely originate from anaffidavit filed Nov. 25 by cybersecurity analyst and former Republican congressional candidate Russell James Ramsland Jr. Mckenzie Sadeghi, USA TODAY, "Fact check: Michigan townships had more registered voters than votes," 31 Dec. 2020 The investors declined to share a copy of the investment contract or discuss details about the deal, such as when the negotiations took place and whether cybersecurity threats were discussed. Washington Post, "Canada’s largest pension fund bought SolarWinds stake days before hacking disclosure, stock plunge," 31 Dec. 2020 Following a cessation of meetings starting Dec. 18, the Defense Department has held three briefings this week with Mr. Biden’s team on Covid-19 and cybersecurity, Pentagon and transition officials said. Sabrina Siddiqui, WSJ, "Biden Transition’s Pentagon Briefings Resume Amid Dispute," 30 Dec. 2020

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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Time Traveler for cybersecurity

Time Traveler

The first known use of cybersecurity was in 1989

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Statistics for cybersecurity

Last Updated

12 Jan 2021

Cite this Entry

“Cybersecurity.” Dictionary, Merriam-Webster, Accessed 16 Jan. 2021.

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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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