ASP.NET Core MVC Security: Action Filters and Authorization

Building web applications requires robust security to ensure sensitive data and actions are only accessible to authorized users. Understanding how to intercept requests and apply security rules at the controller level is a fundamental skill for any web developer. This text-based course guides you through securing your ASP.NET Core MVC applications using built-in and custom filters, transforming how you handle access control. You will transition from writing insecure endpoints to implementing robust, policy-based authorization and role-based access controls that protect your application's action methods. What you'll learn: - Understand the core concepts of the ASP.NET Core request pipeline and filter lifecycle. - Apply the Authorize attribute to restrict access to controllers and specific action methods. - Configure role-based and modern policy-based authorization rules. - Create custom authorization filters for specialized security requirements. - Implement security best practices, including protecting against common web vulnerabilities. - Practice writing secure C# code and configuring authentication middleware. The course begins with foundational security terminology and an overview of the ASP.NET Core MVC request lifecycle. You will then progress through step-by-step written explanations and code examples, learning how to configure authentication, apply standard authorization filters, and design custom policies to meet modern security standards. This course is designed for beginner C# and ASP.NET Core developers who want to understand web application security, with no prior security experience required. Start reading today to build secure, production-ready ASP.NET Core web applications.