Control: 1.2.5 Ensure Multi-factor Authentication is Required for Risky Sign-ins

Description

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

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

Remediation

From Azure Portal

1. From Azure Home select the Portal Menu in the top left, and select Microsoft Entra ID.
2. Select Security
3. Select Conditional Access.
4. Click + New policy.
5. Enter a name for the policy.
6. Select Users or workload identities.
7. Under Include, select All users.
8. Under Exclude, check Users and groups.
9. Select users this policy should not apply to and click Select.
10. Select Cloud apps or actions.
11. Select All cloud apps.
12. Select Conditions.
13. Select Sign-in risk.
14. Update the Configure toggle to Yes.
15. Check the sign-in risk level this policy should apply to, e.g. High and Medium.
16. Select Done.
17. Click the blue text under Grant access and check Require multifactor authentication then click the Select button.
18. Click the blue text under Session then check Sign-in frequency and select Every time and click the Select button.
19. Set Enable policy to Report-only.
20. Click Create.

After testing the policy in report-only mode, update the Enable policy setting from Report-only to On.

Default Value

MFA is not enabled by default.