> First off, why not? Why would you doubt that when they're a massive storefront and deal with fraud of all kinds?
1. The anti-fraud tech used for credit card fraud (ie. stolen credit cards used for unauthorized transactions) don't really translate well to the fraud described here (ie. stolen cryptocurrency).
2. it makes sense for ecommerence merchants to do anti-fraud stuff, because they're on the hook for fraud. the same does not apply to cryptocurrency transactions.
>But also, wouldn't it be fairly easy and beneficial to have this information? Exchanges know what wallets are charged back and fraudulent.
1. I haven't heard of such blacklists being around, especially in 2017 (when steam stopped accepting payments)
2. such blacklists would likely be ineffective, because of mixers and lack of coordination (see previous point)
3. such blacklists threaten the fungibility of bitcoin, which would probably cause backlash from potential customers.
>Is it not in their interest to work with Steam?
1. it might be in their interest to work with steam, but not the other way around
2. even though steam might have huge sales volume, it's not going to be the primary route criminals cash out. if you stole tens of thousands of dollars in crypto, I doubt you'll spend a significant portion of that on games. You only have so much time, and games are relatively cheap. Meanwhile localbitcoin has people willing to give you literal cash for a few percentage points cut. There's a reason why all the anti-money laundering regulations target banks and other high cash volume businesses (eg. pawn shops), and not bestbuy or mcdonalds.
>Or even, is it not in the exchange's interest to do this analysis and demand the coin from Steam?
If [random exchange] messaged me and said that some coins I hold were 10% tainted from 10 transactions ago, and wanted me to return them, I'd tell them to fuck off.