LOL Two things I learned working on the Mil Star project.
One is that the only unhackable computer may be,
a stand alone machine.
not connected to, or accessible by, any other computer, by any method you can envision.
in a uncrackable locked vault.
surrounded by a vacuum
surrounded by a triple layer of self generating self oscillating static barriers.
surrounded by complete soundproofing.
with no available power supply.
Is is possible that this machine can not be hacked, but we are still in doubt.
Two is ''The unhackable computer is a myth. If we could make em foolproof we would not need to hire you people''
