You have the Free edition of a hybrid Azure Active Directory (Azure AD) tenant.

Box 1: Smart lockout

Smart lockout helps lock out bad actors that try to guess your users ' passwords or use brute-force methods to get in. Smart lockout can recognize sign-ins that come from valid users and treat them differently than ones of attackers and other unknown sources. Attackers get locked out, while your users continue to access their accounts and be productive.

Box 2: Conditional access policies

If your environment is ready to block legacy authentication to improve your tenant ' s protection, you can accomplish this goal with Conditional Access.

How can you prevent apps using legacy authentication from accessing your tenant ' s resources? The recommendation is to just block them with a Conditional Access policy. If necessary, you allow only certain users and specific network locations to use apps that are based on legacy authentication.