Fraud Detection Algorithm Refinement Check Fraud

How many of these check fraud attempts would be stopped by a few flags.
New user.
Messages multiple sellers.
"Talk to me here" etc..
I have no wish to expose Offerup safety features.
Merely suggest.
I know that the long con types will always be around in some form or another.
Having everyone verify to be able to use Offerup is not the answer either.
I already have that on my ebay account.
Lets raise the cost of their scam little further thus increasing their time and skill investment requirements.
Did I miss something? Feel free to criticize or correct.
Community Helper
Welcome to the OU Community forum
You sound very tech savvy!
Know OU is always interested in feedback from its users, no judgement here...
Appreciate 👍😉
Level 1
Yes I have big and getting a lot of those what they’ll do is they won’t want to purchase it through OfferUp they want to send you a cashiers check or some kind a check and then some sad story or something because I happen to Meme she said her daughter was sick and she really wanted this purse I had but it just seemed kind of fishy so when they sent me the check they kept asking me if I deposited it yet and I wouldn’t answer them for a little bitBut then would tell them you know they’re still on hold and then they would ask me to just take out $100 then for the meantime or whatever amount and go get two gift cards phone gift cards or something so that was a huge red flag and then when I stopped answering him they had the audacity to actually be like are you trying to steal her money is that what type of person you are and when I emailed them back I said the check didn’t go through didn’t you get a notice and they didn’t even respond