Authentication

Authentication is the process of verifying the identity of a user or device to ensure that they are who they claim to be. It involves validating credentials, such as passwords, biometrics, or digital certificates, to grant authorized access to resources or systems.

Authentication Methods

• Something you know: Passwords, PINs
• Something you have: Security tokens, smart cards
• Something you are: Biometrics (fingerprint, face recognition)

Multi-Factor Authentication

Combining multiple authentication methods significantly increases security.