People could just not connect some devices to the wider world. Make them offline, or support airgapped usage patterns, or support a 1:1 connection only with a m

People could just not connect some devices to the wider world. Make them offline, or support airgapped usage patterns, or support a 1:1 connection only with a management interface (like a KVM), or support fully online use but with as simple a protocol as you can to reduce surface area.