And people say "just do it on-prem, it's cheaper than cloud! It's not all that hard." Work like this is impressive as hell, but finding wizards who can do this kind of work is difficult and expensive. I've sat there are poured over hexdumps trying to get it to reveal it's secrets (Kaitai is pretty cool). But this kind of nitty gritty went away with cloud, to be replaced with a different kind of problem, distributed systems. My point is, that's pretty cool, but there's less demand for that kind of work these days, which is unfortunate, because I kind of liked it.