As another comment mentions; security is not binary. Binary Security is a sign you failed at security. You can be not secure at all, somewhat secure, etc, agai

As another comment mentions; security is not binary. Binary Security is a sign you failed at security. You can be not secure at all, somewhat secure, etc, against a set of threat models or anywhere in between those steps. Whether or not you have properly prepared against a threat model and you are confident in defending against it is a binary property (or rather, two binary properties) but the underlying security is not.