cybersecurity

American  

[sahy-ber-si-kyoor-i-tee] / ˌsaɪ bər sɪˈkyʊər ɪ ti /

Or cyber security

noun

1. precautions taken to guard against crime that involves the internet, especially unauthorized access to computer systems and data connected to the internet.

2. the state of being protected against such crime.

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cybersecurity British  

/ ˌsaɪbəˌsɪˈkjʊərɪtɪ /

noun

1. computing the state of being safe from electronic crime and the measures taken to achieve this

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Etymology

Origin of cybersecurity

First recorded in 1985–90; cyber- ( def. ) + security ( def. )

Example Sentences

Jeff Weniger, head of equity strategy at WisdomTree, said he expects cybersecurity stocks to rebound.

From Barron's • Apr. 23, 2026

The cybersecurity incident was disclosed on April 1, leading to a 4.5% drop in the stock.

From MarketWatch • Apr. 23, 2026

But these and other cybersecurity stocks are still lower year-to-date, in large part because of worries about how Claude and ChatGPT owner OpenAI may impact them.

From Barron's • Apr. 23, 2026

The possibility of unregulated access to Mythos could send a tremor through the cybersecurity world.

From The Wall Street Journal • Apr. 22, 2026

The White House has been racing to address new cybersecurity threats posed by AI models like Mythos and others from competing labs like OpenAI.

From The Wall Street Journal • Apr. 22, 2026