Are you building modern Spring Boot applications and worried about securing them against real‑world threats?
Mastering Spring Security is your step‑by‑step, code‑focused companion to mastering authentication, authorization, and advanced security patterns—without wading through hundreds of pages of theory.

✅ What you’ll learn inside:

🔐 Authentication Mechanisms: From in‑memory users to custom UserDetailsService, JWTs, and OAuth2 login with Google.
🎯 Fine‑Grained Access Control: Secure endpoints and methods with @PreAuthorize, role hierarchies, and ACLs.
☁️ APIs & Microservices Security: Protect REST APIs, configure OAuth2 Resource Servers, and implement token relay with Spring Cloud Gateway.
🛡️ Security Hardening: Defend against CSRF, XSS, and Clickjacking. Encrypt sensitive properties with Jasypt or Vault.
✅ Testing Security: Use Spring Security Test to confidently validate your rules.
💡 Real‑World Projects: Build a secure admin/user web app and a microservice‑based auth system, step by step.

Every chapter is packed with concise explanations, annotated code snippets, and hands‑on exercises so you can implement what you learn immediately.

Whether you’re a Spring Boot beginner who wants to add security to your first app or an experienced developer looking to master advanced mechanisms like OAuth2, ACLs, and centralized authentication—this book is designed to get you there, fast.

💬 What readers are saying:
"Clear, practical, and full of real-world examples. A must-have guide for any Spring developer."

📖 Master Spring Security today—build applications you can trust.

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