Authentication protocols enhance cybersecurity measures by defining methods to verify user identities before granting system access. Protocols like OAuth and OpenID Connect enable secure, token-based authentication, reducing the risk of unauthorized access. Additionally, multi-factor authentication (MFA) adds layers of security, requiring multiple verification forms (e.g., passwords, biometric data), making it harder for attackers to compromise accounts. These protocols are essential for maintaining secure environments, protecting sensitive data, and complying with regulatory standards while delivering a trusted user experience.