Securing Your ASP.NET App with 2FA Using Nexmo SMS and SendGrid Email

This tutorial demonstrates how to implement 2 Factor Authentication (2FA) in an ASP .NET MVC application using Nexmo SMS and SendGrid Email as the different methods of verification. The implementation involves setting up the Nexmo and SendGrid clients, adding the necessary configuration to the IdentityConfig.cs file, and creating a new controller action method for sending emails and SMS messages. The tutorial also covers how to add 2FA capabilities to user registration and login processes, ensuring that users cannot bypass the 2FA verification process. By using SMS and email as additional layers of security, this implementation provides an enhanced level of protection against unauthorized access to sensitive user information.