Spring Security Fundamentals: Secure Your Java Applications

Securing modern web applications is no longer optional—it is a core requirement for every developer. This comprehensive text-based course helps you understand how to safeguard your Java applications from unauthorized access and malicious exploits. You will transition from writing insecure code to implementing robust, industry-standard security architectures. By reading through structured explanations and analyzing clear code examples, you will gain the confidence to configure secure access control, manage user sessions, and defend against common web vulnerabilities. What you'll learn: Understand the core Spring Security architecture, including filter chains, authentication providers, and security contexts; Configure custom login flows, password hashing, and database-backed user details services; Implement role-based and authority-based access control to restrict application features; Apply modern security practices like stateless JWT authentication and OAuth2 client integration; Defend your applications against common threats such as Cross-Site Request Forgery (CSRF) and Cross-Origin Resource Sharing (CORS) misconfigurations; Practice securing REST APIs using modern Spring Boot configuration patterns without deprecated adapters. The course begins with foundational security concepts and terminology before guiding you step-by-step through configuration patterns, custom user management, and token-based security. This course is designed for Java developers who are new to application security and want a clear, conceptual foundation without needing prior security experience. Start reading today to build secure, resilient Java applications with confidence.