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

Perullo said that with the volume of security data growing exponentially, cybersecurity uses AI to enhance SIEM functions to help companies reduce alert fatigue and improve detection accuracy. —Paulina Likos, CNBC, 17 Nov. 2025

Phia’s data collection Phia, the AI shopping agent co-founded by Bill Gates’ daughter Phoebe Gates, has been capturing a concerning amount of user information through its browser extension, cybersecurity experts say. —Diane Brady, Fortune, 17 Nov. 2025

The chief technology officer oversees the department’s technological needs, from computers and software to rail technology and cybersecurity. —Sacbee.com, 15 Nov. 2025

The real test will be how both Conduent and its government partners adapt their cybersecurity oversight to prevent similar breaches. —Kurt Knutsson, FOXNews.com, 14 Nov. 2025

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