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Multi-Factor Authentication (MFA) is the most effective tool in the identity security toolkit. However, not all MFA is created equal. While SMS codes are better than nothing, they are increasingly vulnerable to SIM-swapping attacks.

Modern IAM solutions use machine learning-driven identity protection to evaluate user risk, sign-in risk, device compliance, location, app context, and real-time threat intelligence . Microsoft Entra ID's Conditional Access model is considered the strongest in this category, allowing for signal-based if/then rules . identityaccessacloudcomau best