They confirmed a method to get in existed, but did not reveal - what the scope of its usefulness is (particular kinds of hardware or software revisions) - whe

They confirmed a method to get in existed, but did not reveal - what the scope of its usefulness is (particular kinds of hardware or software revisions) - whether it still works on modern platforms Without even a vague idea where to look or whether it's still there, it's a guarantee that _something_ existed, sometime.