Well, at least it's your mistake that you make. (I agree that some better checksum or verification before you press "send" might be good). In the US, people

Well, at least it's your mistake that you make. (I agree that some better checksum or verification before you press "send" might be good). In the US, people can withdraw from your bank account if they have the numbers. And it's on you to detect and report the fraud to get it reversed.