That sort of all-or-nothing threat model isn't particularly useful. You can never hope for perfect unassailable security. The best you can do is make attacks t

That sort of all-or-nothing threat model isn't particularly useful. You can never hope for perfect unassailable security. The best you can do is make attacks too expensive/complex for the attackers you're concerned about. From that point of view, glitter varnish produces exceedingly good results for minimal costs.