@RosieLuo I agree with Paul about verifying the order and not risking if you can’t afford too, or if it’s a high value order (if it’s a high value order you may want to enforce a different form of payment, since credit card companies always side with the customer instead of supporting the business).
I used to run an ecommerce shop and fraudulent orders were a paaaaain.
We had our support staff follow up with the customer and use various methods (Depending on the situation, but I think it evolved to asking about the order, requesting a picture of their driver’s license to match with the name, and verify in writing / email that the customer agrees they are purchasing this item legitimately, and waives their right to a return or file a charge back).
In the end it’s the bank’s decision, and they almost always side with the customer, but if you can gather evidence like above it may help your case.
Explain to the customer something like (in the tone of your brand) that you know this is annoying, but this is just to protect your shop, because often times when the fraud system is tripped it’s a scam attempt that costs your business money.
Some people will say they’re not comfortable with it, then you can try and ask for other verification (maybe a phone call, for example), or you can just try to feel them out and determine what you think is legit or not. Most people will understand if you explain that there are bad people out there that try to hurt your business, and this is necessary.
I now run an app where 1 of the features helps prevent fraud / chargebacks (Order Automator, the fraud feature is free to use). You can use the app to notify staff of high or medium risk orders, or even cancel the orders (some people get a lot of fraud attempts and choose to have high risk orders auto cancelled and prevent any hassle).
We did an analysis on multiple stores and found that 20% - 30% of high risk orders result in chargebacks, but medium risk orders rarely result in chargebacks. What we did with my old shop (it’s still active, just not with me any more), is allow all medium risk orders, until 1 resulted in a chargeback. Never happened so they only focused on high risk orders.
Fraud sucks! Hope this helps at least a little bit!