Why single-use codes often stop systemic abuse better than usage limits

https://online-wiki.win/index.php/When_3B%2B_Coupons_Hit_the_Network:_How_One_Mass_Push_Exposed_POS_Redemption_Fragility

Most organizations treat fraud controls as something to add after abuse is obvious: deploy limits, wait for signals, tweak rules. Early results from focused experiments suggest a different path