A certain person I know who is a professor had her email hacked, after which the hacker was able to get her college, using her name, to request a wire transfer of funds (nearly $20,000) to some outfit in Europe supposedly for a purchase. (The professor in question had done some wire transfers in the past.) The college told the bank (where the money ended up) that it was a fraudulent transfer and that they wanted it back. The bank queried the owner of the account and at first received no reply. Eventually, the owner did reply, but in a way that the bank thought was suspicious, so they yanked the money out.
I am glad that this has a happy ending, but at the same time I have to wonder: how often do banks query people about the source of money they have deposited? Does anyone know?