Let's take a look at service accounts currently available in the default Namespace.
1 kubectl get sa
The output is as follows.
NAME SECRETS AGE default 1 24m
At the moment, there is only one ServiceAccount called default. We already saw the limitations of that account. It is stripped from (almost) all the privileges. If we check the other Namespaces, we'll notice that all of them have only the default ServiceAccount. Whenever we create a new Namespace, Kubernetes creates that account for us.