I guess you can call certain forms of protections people use "real" security versus "unreal" security, but I don't see your demarcation in practice.
> Obfuscation as a way to purposefully hide security holes is terrible.
I misspoke; I meant to say 'obscurity', which is the relevant concept in this thread, and there are most certainly reasons to have security through obscurity: once you've found a flaw, you must fix it before its obscurity vanishes. This is certainly relevant it the development of fuzzers where novel approaches could reveal 0-days.
> Obfuscation as a way to purposefully hide security holes is terrible.
I misspoke; I meant to say 'obscurity', which is the relevant concept in this thread, and there are most certainly reasons to have security through obscurity: once you've found a flaw, you must fix it before its obscurity vanishes. This is certainly relevant it the development of fuzzers where novel approaches could reveal 0-days.