dotnet-api-security

You secure ASP.NET Core APIs with JWT bearer authentication by configuring token validation and applying per-endpoint authorization policies. This approach prevents unauthorized access by requiring valid tokens for incoming requests.

Integrate OAuth 2.0 and OpenID Connect external providers into your ASP.NET Core API to handle external authentication. This approach delegates user authentication to external providers, returning secure tokens for API access.

Yes, you can implement passkeys for passwordless login in ASP.NET Core using WebAuthn authentication. This feature is supported on the .NET 10 stack, providing phishing-resistant cryptographic credentials for secure user management.

Configure rate limiting middleware in your ASP.NET Core API to control request rates and prevent abuse. You can apply fixed window, sliding window, token bucket, or concurrency limiters to restrict incoming request volumes.

Yes, this API security configuration supports the .NET 8+ stack for ASP.NET Core Identity, JWT bearer authentication, and rate limiting. It also supports passkey WebAuthn authentication introduced in .NET 10.

Configure CORS policies and Content Security Policy headers to prevent unauthorized data exposure during cross-origin calls. CORS restricts which origins can access your API, while CSP headers mitigate injection and data exfiltration attacks.