add how to specify a tenant by URL

Author: junhasems

articles/active-directory/authentication/concept-registration-mfa-sspr-combined.md

@@ -159,6 +159,10 @@ To switch the directory in the Azure portal, click the user account name in the
 
 ![External users can switch directory.](media/concept-registration-mfa-sspr-combined/switch-directory.png)
 
+Or, you can specify a tenant by URL to access security information.
+https://mysignins.microsoft.com/security-info?tenant=<Tenant Name>
+https://mysignins.microsoft.com/security-info/?tenantId=<Tenant ID>
+
 ## Next steps
 
 To get started, see the tutorials to [enable self-service password reset](tutorial-enable-sspr.md) and [enable Azure AD Multi-Factor Authentication](tutorial-enable-azure-mfa.md).