Banks aren't particularly secure. I would guess that most banks are significantly less secure than most cryptocurrency exchanges. In fact I suspect that if you

Banks aren't particularly secure. I would guess that most banks are significantly less secure than most cryptocurrency exchanges. In fact I suspect that if you ran a cryptocurrency exchange with the level of security offered by a bank the exchange would be hacked in short order. The big difference here is that if a hacker transfers large sums out of a bank, the bank can just reverse those charges, whereas with a cryptocurrency exchange those funds are gone for good (for a solution to this problem see Covenant-based vaults [0]). Not only does draining a bank require serious investments in criminal organization and rare knowledge it also leaves a pretty big evidence trail. [0]: https://link.springer.com/chapter/10.1007/978-3-662-53357-4_9 https://link.springer.com/chapter/10.1007/978-3-662-53357-4_...