Hello, turning off Azure AD Security Defaults will:
- No longer require all users to register for Azure AD Multi-Factor Authentication
- No longer require administrators to pass multifactor authentication
- No longer require users to pass MFA whenever Azure AD deems necessary
- Unblock legacy authentication protocols
- No longer require MFA for these services:
- Azure portal
- Azure PowerShell
- Azure CLI
For more information regarding the aforementioned, including the rationale behind their enforcement, take a look to Enforced security policies.
Once Security Defaults is disabled, it's recommended to consider Conditional Access to improve the security of your tenant.
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