chargebacks
 

Last 30 days i have big volume of chargebacks for most of my sponsors ~20% . In fact for these 30 days I have chargebacks equal to my last 2 years chargebacks. How can I prevent this.
I have even one day when many chargebacks appeared at two different sponsors.It seems that these all these chargebacks coming from one cheater with stolen cards who visiting my site...

20% chargebacks sucks indeed. I hope the sponsors won't terminate you.