The fact that something like Stuxnet could be leaked, and yet something altogether less malevolent like Bitcoin could be tighter, and not leak? Highly improbabl

The fact that something like Stuxnet could be leaked, and yet something altogether less malevolent like Bitcoin could be tighter, and not leak? Highly improbable in my view. I think its more probable that a genius-level individual came up with it, and subsequently got lucky in that his creation became wildly successful. Would we be discussing this if noone had used it, and it remained a lone individual's spare time project?