cybersecurity

noun

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

: 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

Palo Alto Networks — Shares of the cybersecurity company tumbled 5% after Palo Alto issued a weak earnings forecast for the current quarter. —Christina Cheddar Berk, CNBC, 18 Feb. 2026

As such, a cybersecurity failure in the F-35 program would be a serious breach that could jeopardize the integrity of planned and upcoming missions. —Chris Young, Interesting Engineering, 17 Feb. 2026

In several cybersecurity competitions, teams using AI agents beat human-only teams, and in one case an AI was allowed to run on its own, successfully breaking into a target system without further human input. —Sharon Goldman, Fortune, 17 Feb. 2026

Brian Barrett: As a cybersecurity reporter, crypto scams are Andy's bread and butter. —Brian Barrett, Wired News, 6 Feb. 2026

Word History

First Known Use

1989, in the meaning defined above

Rhymes for cybersecurity

• biosecurity
• immaturity
• insecurity
• prematurity
• impurity
• maturity
• obscurity
• security
• purity
• surety

Legal Definition

cybersecurity

noun

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

: measures taken to protect a computer or computer system (as on the Internet) against unauthorized access or attack