Then we are getting back to the point that PayPal (or Venmo, or Zelle) payments are safer in this sense than any of traditional check payments. From my understanding, cashier's check is backed by funds that are withdrawn from your bank account when you draw this check. And you can check availability of funds and validate cashier's check only as well as I recall. So, I have no idea how they can withdraw deposited cashier's check funds back. With personal check, this can be the case, but until it clears. Cleared check means that funds were moved between two banks and available for you to spend, i.e. the other bank confirmed the validity of the check and released funds. How after this point can the bank "backtrack" it? What am I missing?