Spring Security makes it much, much easier to secure enterprise-scale Java applications. This powerful framework integrates with Spring apps end to end, with "secure by design" principles and ready-to-use features that help you implement robust authorization and authentication and protect against data theft and intrusions. And like everything else in the Spring ecosystem, it's free, open source, and backed by the awesome team at VMWare. Spring Security in Action, Second Edition updates this bestselling guide to Spring Security to include deep coverage of OAuth2/OpenID Connect and security configuration using the new SecurityFilterChain. The crystal clear explanations and relevant examples, teach you how to build your own authorization server, configure secure endpoints, and prevent cross-site scripting and request forgery attacks. What's Inside, Custom authentication and authorization, CRSF and CORS configurations, Secure Spring reactive applications, Write tests for security configurations, For experienced Java and Spring developers.