Microsoft Azure Security Technologies (AZ-500)

When should you consider using Multi-Factor Authentication (MFA) in Azure Active Directory?

1. For all user logins

2. For users accessing sensitive information

3. For employees working remotely

4. Only when accessing from an unknown location

The correct answer is: For users accessing sensitive information

Using Multi-Factor Authentication (MFA) for users accessing sensitive information is a critical security measure. Sensitive information typically includes confidential corporate data, personally identifiable information (PII), financial records, and other high-value data that could lead to severe consequences if compromised. Implementing MFA for these users significantly reduces the risk of unauthorized access because it requires multiple forms of verification to authenticate a user's identity. This approach ensures that even if a single authentication factor, such as a password, is compromised, the additional layers of security provided by MFA (like a mobile app notification, text message code, or hardware token) can help prevent unauthorized access to critical data. While requiring MFA for all user logins may seem overly secure, it could lead to user fatigue or resistance, and may not be necessary for all accounts. Likewise, requiring MFA only from employees working remotely or only when accessing from unknown locations does not provide comprehensive protection for users who might still access sensitive information in different contexts, underscoring the value of applying MFA directly to sensitive information access.