And what they will get is "haha! It was only 230 hours and we cracked their ... oh, there's another dozen sparse files inside that and it's a different combo...

And what they will get is "haha! It was only 230 hours and we cracked their ... oh, there's another dozen sparse files inside that and it's a different combo..." I can automate encrypted sparse files all the way down each showing a size between 5PB and 40PB which a lot of forensic software will try to copy as a non sparse file.