Offer your thoughts or opinion on the input financial query or topic using your financial background.

I received $1000 and was asked to send it back. How was this scam meant to work?
I've skimmed through the answers given and I'd like do add another possible scenario.  I've recently heard about this exact thing happening to someone only the money originally was a loan taken in the receivers name. 1) Scumbag finds out personal data – including social number, bank account and phone – of Innocent Victim.  2) Scumbag takes out a loan in the name of Innocent Victim. The money are sent to IV's account. 3) Scumbag calls IV saying 'Oh, I've made a mistake, blah, blah, yada, yada. Could you please send the money back to me? My bank account is...' 4) Innocent Victim, being the good guy that he/she is, of course want to help out and send the money to Scumbag. 5) Scumbag makes a cash withdrawal and is no longer anywhere to be found and Innocent Victim is left with a loan but no money.