Gentlemen, thank you all for the input. I was able to go into a local branch today and speak to live person (rather than some phone rep who has no accountability). As per the Citibank Branch Manager, any funds transferred to you via bank wire are 100% secure.
Each transaction is given a Federal Funds Wire # via the institution sending the funds. The # is verified and funds checked by some Federal thing-a-ma-jig system and then deposited into your acct. The wire cannot be reversed for any reason, and as far as Citibank policy goes, no one can initiate any type of withdrawal with just your acct # and routing #, there are numerous safe guards in place to prevent this industry wide.
BTW trying to manipulate bank wire transactions in the US is a Federal Crime. The transactions are in fact federally regulated and are processed through federal channels, hence the federal funds wire # assigned to each transaction.