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1.2.5 Ensure Multi-factor Authentication is Required for Risky Sign-ins (Manual)​

Profile Applicability​

• Level 1

Description​

For designated users, they will be prompted to use their multi-factor authentication (MFA) process on login.

Rationale​

Enabling multi-factor authentication is a recommended setting to limit the potential of accounts being compromised and limiting access to authenticated personnel.

Impact​

There is an increased cost, as Conditional Access policies require Azure AD Premium. Similarly, they may require additional overhead to maintain if users lose access to their MFA.

Audit​

From Azure Portal​

  1. From Azure Home select the Portal Menu and select Security.
  2. Select on the left side Conditional Access.
  3. Select the policy you wish to audit.
  4. View under Users and Groups the corresponding users and groups to whom the policy is applied.
  5. View under Exclude to determine which users and groups to whom the policy is not applied.

Remediation​

From Azure Portal​

  1. From Azure Home select the Portal Menu in the top left, and select Azure Active Directory.
  2. Scroll down in the menu on the left, and select Security
  3. Select on the left side Conditional Access.
  4. Click the + New policy

References​

https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/howto-conditional-access-policy-risk
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/troubleshoot-conditional-access-what-if
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/howto-conditional-access-insights-reporting
https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-identity-management#im-7-restrict-resource-access-based-on--conditions

Additional Information​

These policies should be tested by using the What If tool in the References. Setting these can and will create issues with logging in for users until they use an MFA device linked to their accounts. Further testing can also be done via the insights and reporting resource the in References which monitors Azure sign ins.