Experienced carders don’t make tiny purchases
Newbies might engage in that behavior to validate the card before buying something big, but experienced fraudsters have known since carding began that a small charge followed by a larger one often kills the card. You really don’t see this from experienced crooks.
Fraud is a game that requires constant learning
As you can see, some guy gets the info that is intended for fraud managers and shares it within a community of fraudsters. They then change their behavior to avoid the attention of fraud managers on the lookout for specific types of behavior. This type of learning is common among organized fraudsters. Good fraudsters research all they can on security techniques and continue to adapt to become better criminals.
Read More.. Source Fraudbeat