Names like azure_superuser, azure_pg_admin, admin, administrator, root, guest, public for an Azure SQL Server Active Directory Administrator account are used, this may lead to unauthorized access via brute force attack.
In Azure Console -
In Terraform -
References:
https://learn.microsoft.com/en-us/azure/azure-sql/database/logins-create-manage?view=azuresql
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/sql_server