Authentication Systems
Authentication systems are frameworks and protocols that verify the identity of users, devices, or applications before granting access to resources. They ensure that only authorized entities can interact with systems, data, or services, typically through mechanisms like passwords, tokens, biometrics, or multi-factor authentication. These systems are fundamental to security in software development, protecting against unauthorized access and data breaches.
Developers should learn authentication systems to implement secure access control in applications, especially for user-facing services, APIs, and sensitive data handling. Use cases include building login systems for web apps, securing microservices with token-based authentication, and integrating with third-party identity providers like OAuth for social logins. Mastery is essential for compliance with security standards and protecting user privacy.