Java Security Fundamentals: Authentication and Authorization

Securing user data and controlling access are the most critical responsibilities of any backend developer. This text-based course introduces you to the core principles of Java security, helping you move from basic concepts to building robust defense mechanisms for your applications.\n\nYou will learn how to verify user identities, control who can access specific resources, and safely encrypt sensitive information. By studying real-world scenarios and structured code explanations, you will gain the confidence to design secure login flows and protect application data from unauthorized access.\n\nWhat you'll learn:\n- Understand foundational security concepts, threat models, and the difference between authentication and authorization.\n- Implement secure password management using modern hashing algorithms like bcrypt and Argon2.\n- Configure robust role-based access control (RBAC) and attribute-based access control (ABAC) strategies.\n- Apply modern stateless authentication techniques using JSON Web Tokens (JWT) and secure session management.\n- Protect sensitive application data with industry-standard encryption and decryption practices.\n- Mitigate common security vulnerabilities in Java applications, such as session hijacking and credential stuffing.\n\nThe course begins with essential security terminology and core architectural concepts before guiding you through step-by-step explanations of secure login systems and data protection patterns. You will read, analyze, and practice writing secure Java code to reinforce each lesson.\n\nThis course is designed for beginner Java developers, software engineers, and security enthusiasts who want to build a solid foundation in backend security without complex prerequisites.\n\nStart your journey toward writing secure, production-ready Java code today.