How does the bank verify the scammer and the "victim" aren't colluding?
I.e. Mal opens a bank account with $100k, it gets cleaned out when he's "scammed" by Eve, then Mal is reimbursed $100k. Mal & Eve collectively start with $100k, and end up with $200k.
(This is why I put "victim" in quotes: In this scenario, Eve and Mal are co-conspirators trying to defraud the scam reimbursement system.)