[bjano]

There seems to be a huge conflict of interest here: as card processors slap you with an extra chargeback fee for the fraudulent transactions (in addition to the amount they take back anyway) it's difficult to believe that they would work very hard to help you avoid this.

[DiabloD3]

Why? They have a profit motive for you to get scammed.

[fweespee_ch]

They do, to a point, but since you are the one who bears the fee they do the amount they can cost effectively which is frankly marginally effective.