It’s easy to secure minimal API endpoints in ASP.NET Core using JSON Web Tokens for authentication and authorization. Just follow these steps.

JSON, a lightweight data exchange format, is used as a foundation to create Web-friendly ways to perform well-understood security practices, such as token exchange, within identity infrastructures.

Critical vulnerabilities exist in several JSON Web Token (JWT) libraries – namely the JavaScript and PHP versions – that could let an attacker bypass the verification step.

The tokens are usually used for authorization and authentication, the researchers said, adding that it was developed and maintained by Auth0.