Leveling Up Security: Implementing Multi-Factor Authentication (MFA) in Your .NET Core App with step by step
Let’s be real—security in web applications is no longer optional, it’s an absolute must. With the rise of cyber threats, traditional username and password combinations are just not enough to keep intruders at bay. That’s where Multi-Factor Authentication (MFA) comes into play. In this post, we’ll dive into how to implement MFA in your .NET Core app , creating a layered defense that ensures only the right users gain access. We’ll make it simple, practical, and yes, fancy—because why not make security elegant? Why MFA? Before we get into the code, let’s answer the big question: Why MFA? MFA adds an extra step to the authentication process. It's no longer just about "what you know" (like your password), but also about "what you have" (like your phone for a one-time code) or "who you are" (like your fingerprint or face recognition). This significantly reduces the chances of unauthorized access, even if a password is compromised. Let’s break down a typic