Authentication is the security process that verifies a user is who they claim to be in a digital environment. It’s typically carried out via password, SMS code, biometric data, or digital signature.
Why It’s the Foundation of Security
Without authentication, systems are wide open to attack. Unauthorized access leads to data breaches, fraud, and reputational damage. Strong authentication methods minimize all of these risks.
Why It Should Be Multi-Factor
A single verification step may not be enough. Systems that require two or more factors are significantly more secure. Combining a password with an SMS code or biometric check raises the security bar for both users and data.
