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

Now a report from a leading U.S. cybersecurity firm suggests such cases may be linked to a large scale operation from a Chinese cyber espionage group seeking to monitor the country’s upcoming and contentious July 29 national elections. Abby Seiff / Phnom Penh, Time, "Chinese State-Linked Hackers in Large Scale Operation to Monitor Cambodia's Upcoming Elections, Report Says," 11 July 2018 The agency works on cybersecurity, launches satellites and other payloads for the military and other government agencies, monitors ballistic missile launches and orbiting satellites and runs a military GPS system. Jason Daley, Smithsonian, "The U.S. Military Has Been in Space From the Beginning," 20 June 2018 The village is working with Sylint Group, a cybersecurity firm who has worked with other municipalities whose Click2Gov systems were compromised. Austen Erblat,, "Wellington data breach affects more departments serving residents," 15 June 2018 Those are people who have skills in cybersecurity, machine learning — a subset of artificial intelligence engineering — and anything to do with automated and electric vehicle systems such as battery technology, fuel cell systems and hydrogen. Jamie L. Lareau, Detroit Free Press, "In auto talent war, GM hires 9,000, spends $1 billion on offices," 14 June 2018 McLaughlin will become vice chairman of the cybersecurity company. Kara Swisher, Recode, "Former Google business head Nikesh Arora has been named CEO of Palo Alto Networks," 1 June 2018 The budget would spend an additional $5.7 million on cybersecurity, including 11 new positions. Steve Harrison, charlotteobserver, "County budget includes first tax increase in 5 years. Here's what it would pay for. | Charlotte Observer," 22 May 2018 But that may not mean much: Mr. Trump’s homeland security adviser, Thomas P. Bossert, who oversaw cybersecurity policy, was dismissed last week after John R. Bolton took over as national security adviser. David E. Sanger, New York Times, "Tech Firms to Pledge Not to Assist Governments in Cyberattacks," 17 Apr. 2018 Records for more than five million credit and debit cards used at all the chains’ North American locations were compromised, according to Gemini Advisory, a cybersecurity firm. Paul Davidson, USA TODAY, "Data breach hits Lord & Taylor's, Saks," 1 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

21 Sep 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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