Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “callback security”

callback security

noun [U]     (also dial-back security)
IT a system used for protecting a computer network , in which a user calls into a computer , which checks the person's username and password , ends the call , and then calls back the number connected with that username and password
(Definition of callback security noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of callback security

Word of the Day

amicable

relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More