What is Authentication?

Authentication, in the realm of cybersecurity and identity and access management (IAM), is the process of verifying the identity of a user or system attempting to access resources or services. It ensures that the entity claiming an identity is indeed who or what it purports to be.

How Authentication Works

Identification
The user provides a unique identifier, such as a username, email address, or employee ID, to indicate their identity.

Verification
The system then validates the claimed identity by requesting authentication credentials, such as a password, PIN, biometric data (like fingerprint or facial recognition), security tokens or digital certificates.

Validation
The provided credentials are compared against stored records in the authentication system's database. If the credentials match, the user's identity is confirmed and they are granted access.

Authentication plays a vital role in ensuring the security and integrity of digital systems by preventing unauthorised access. It is typically the first line of defence against malicious actors attempting to gain entry to sensitive data or resources. Strong authentication mechanisms, such as multi-factor authentication (MFA), help enhance security by requiring users to provide multiple forms of verification, making it more difficult for attackers to compromise accounts.