Nothing wrong with appealing to probability, because not trying to prove something did happen only that it might have happened.

You are never going to objectively quantify the probability , so why bother trying.

As for hacking banks, yeah attacking the crypto itself is usually futile. People are the weak link security speaking. Transport might not have been hacked, but financial institutions have been hacked a ton. Cant tell if you are saying that or not from your wording though.

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)