CSharp-Coder

Learn ASP.NET Core security best practices for 2026: stop XSS, CSRF, SQL injection & more with real C# code. Secure your web app today. Web applications are attacked constantly, and ASP.NET Core security is something every .NET developer needs to get right before shipping to production. The good news: ASP.NET Core ships with strong defaults for authentication, authorization, data protection, and request validation. The bad news: those defaults only help if you understand them, keep them switched on, and don't accidentally undo them with a well-meaning configuration change. This guide walks through the ASP.NET Core security best practices that matter most in 2026, with runnable C# examples and an explanation of why each one matters. We'll cover the OWASP Top 10 threats as they apply to .NET, from SQL injection and cross-site scripting (XSS) to broken authentication and misconfigured security headers, and finish with a checklist you can run against your own project. W...