If under "proper security" the author means something that is impenetrable then such thing does not and will never exist in general. We can approach some reason

If under "proper security" the author means something that is impenetrable then such thing does not and will never exist in general. We can approach some reasonable level but with the current explosion of software, its complexity, insane degree of dependency, every button of your shirt becoming "smart" gizmo connected to Amazon and whatnot I believe the situation for now will only get worse.