If comparing the level of security between saving money in crypto or at the bank, I think the best level of security is the bank on the crypto appeal. Banks still dare to guarantee when our money is stolen or hacked, the bank will refund our money 100% and those who bear its loss as a consequence. But when our money in crypto (stored in the wallet) is stolen then we can not do anything or restore it (because it is difficult to return our money back).