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?
This is almost certainly a scam or a mistake.  This is not good, spendable money: it is not yours to keep. Very simple to handle.  Tell the bank, in writing that you were not expecting to receive this money and are a bit surprised to receive it. Preferably in a way that creates a paper trail.   And then stop talking.  Why?  Because you honestly don't know.   This puts you at arm's length to the money: disavowing it, but not refusing it. Wildest dreams: nobody wants it back ever.    As for the person bugging you for the cash, tell them nothing except work with their own bank.  Then ignore them completely.  He probably hacked someone else, diverted their money into your account, and he's conning you into transferring it to a third location: him.  Leaving you holding the bag when the reversals hit months later.  He doesnt want you reversing; that would return the money to the rightful owner!  He works this scam on dozens of people, and he wins if some cooperate. Now here's the hard part.  Wait.  This is not drama or gossip, you do not need to keep people updated.  You are not a bank fraud officer who deals with the latest scams everyday, you don't know what the heck you are doing in this area of practice.  (In fact, playing amateur sleuth will make you suspicious).  There is nothing for you to do.  That urge to "do something" is how scammers work on you. And these things take time.  Not everyone banks in real time on smartphone apps. Of course scammers target those who'd be slow to notice; this game is all about velocity.   Eventually (months), one of two things is likely to happen.   The transfer is found to be fraudulent and the bank reverses it, and they slap you with penalties and/or the cops come knockin'.  You refer them to the letter you sent, explaining your surprise at receiving it.  That letter is your "get out of jail free" card.   The other person works with their bank and claws back the money.  One day it just disappears.  (not that this is your problem, but they'd file a dispute with their bank, their bank talks to your bank, your bank finds your letter, oh, ok.)  If a year goes by and neither of these things happens, you're probably in the clear.  Don't get greedy and try to manipulate circumstances so you are more likely to keep the money.  Scammers prey on this too.  I think the above is your best shot.