Chargeback fraud is when someone buys something with their credit card and disputes the purchase after receiving the item or service. This means that they tell their credit card company that they didn't actually buy the thing or that they didn't receive what they paid for. Sometimes people do this because they actually didn't receive what they paid for, but other times they do it on purpose to get their money back even though they got what they wanted. This can be a problem for businesses because they lose money when someone disputes a purchase, and they might even lose their ability to use credit card payments in the future if they get too many disputes. It's important to be honest and only dispute purchases when there is an actual problem, rather than trying to cheat the system.