Disadvantages
- User Convenience: Adding extra steps to the login process can slow down access and frustrate users, especially if the second factor requires an external device or app.
- Cost and Implementation Complexity: Setting up MFA infrastructure, including hardware tokens or authentication apps, involves initial and ongoing expenses, which can be burdensome for smaller organizations.
- Risk of Lockout: If users lose access to their second factor (such as losing their phone or token), they may be temporarily locked out of their accounts, requiring a time-consuming recovery process.
- Technical Failures: MFA systems may face issues such as delayed SMS delivery, app glitches, or network connectivity problems that can prevent successful authentication.