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top   »  information technology   »  information security   »  authentication   »  authentication definition

What is Authentication?

 , updated on July 23, 2023
Authentication is the process of verifying the identity of people, organizations, applications, devices and digital entities. It is a fundamental building block of both information and physical security.

Examples

A website that verifies users with a logon and password.
An API that verifies apps using an app key and token.
An office location that requires employees to present a smart card and enter a password to enter.
Overview: Authentication
Type
Information Security
Definition
The process of verifying identity.
Related Concepts
Strong Password
Master Password
Password Fatigue
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