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.

---

cybersecurity British  

/ ˌsaɪbəˌsɪˈkjʊərɪtɪ /

noun

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

---

Etymology

Origin of cybersecurity

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

Example Sentences

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 hot topic in cybersecurity has been Anthropic’s Mythos AI model—which is supposedly so capable that the company has deemed it too dangerous to release to the public and is restricted to corporate previews.

From Barron's • Apr. 21, 2026

The French company said the planned investment is part of its strategy to develop sovereign cybersecurity capabilities in France and boost its position in the wider European cybersecurity sector.

From The Wall Street Journal • Apr. 21, 2026