Spring Security: A Comprehensive Guide for Secure Java Applications

In today's digital age, security is a top priority for any application. The Spring Security framework offers a robust and versatile solution for securing Java applications. In this guide, we will explore the basics of Spring Security, including authentication, authorization, and token-based authentication.

Authentication refers to the process of verifying a user's identity. This typically involves comparing login credentials with stored information in a database or other authentication system. Authorization, on the other hand, is the process of determining whether a user has the necessary permissions to access specific resources.

Spring Security provides various annotations to simplify security implementations. For example, @PreAuthorize and @Secured can be used to restrict method execution based on user roles.

In addition to authentication and authorization, Spring Security also offers protection against common attacks such as CSRF (Cross-Site Request Forgery) and password encryption. It also includes a chain of filters that intercept HTTP requests to apply security checks, including user authentication and token validation.

Source: https://dev.to/camilaferreiranas/guia-basico-de-spring-security-5358