Re: Don't think so
"It is just inconceivable that major organizations depend on IBAN account numbers sent in emails to do their work. "
The whaling scams I've seen purport to be from XYZ large supplier requesting a change of account details.
The amazing part is that I've had people complain that the system won't just let them enter the details that have come in via email and as others have mentioned, will make the confirmation call to the phone number in the email, not the one already in the system. (Which is why the system won't just let them bang in changes. There's a procedure to follow for a reason and I don't give a monkeys if you're the CEO, I'm not deviating from it unless you give me an order in writing, indemnifying me from any consequential liabilities)