Who? Ring employees or someone breaking into your Ring account?
If the former, I’m not sure there’s much that can be said to counter that concern. You just have to trust the company to have procedures in place to prevent employees from snooping.
If the latter, Ring does have 2-step verification in place for signing in from a new device (albeit not the best since is relies on sms) and does send an email notification when someone has signed in on a new device.
However, something that is internet-connected is always going to have this risk to some extent.