sleepy_eye - 8:51 pm on Jun 15, 2010 (gmt 0)
What information do you use to verify their purchase?
We use all the above to check the orders, AVS, calls to banks, Ip Geolocation, calling customer, common sense, ..etc
But theres one thing we do might not have been mentioned, the cart compares text fragments we find on frequent fraud orders against current orders, ex, jatim java, fastermail, 23401 ..etc These are things we have noticed are common to many fraud orders and add them to our cart.
No method is fool proof, but using a balancing scale method to decide and with practice, you can nearly get all the fraud ones. There are fraudsters out there tho that are very good at what they do, if you can study or find common tactics or errors in those orders, you add to your experience.
Its been about 6 months since a fraud chargeback for us, hope that keeps going :)