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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
Definition
The process of verifying identity.
Related Concepts
Next: Authentication

Information Security

This is the complete list of articles we have written about information security.
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Canary Trap
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Authentication

A list of authentication techniques and considerations.

Password Entropy

An overview of password entropy.

Identification vs Authentication

The difference between identification and authorization.

Authentication vs Authorization

A few examples of the difference between authentication and authorization.

Security vs Privacy

The relationship between security and privacy.

Hardening

An overview of technology hardening.

Deep Magic

An overview of deep magic, a technology term.

Defense In Depth

An overview of defense In depth.

Encryption Examples

A definition of encryption with examples.

Canary Trap

A definition of canary trap with an example.

Honeypot

A definition of honeypot with examples.

Security Through Obscurity

A definition of security through obscurity with an example.

Tokens

A definition of token with examples.

Backdoor

A definition of backdoor with examples.
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