Internet Fraud is an illegal activity wherein a person in possession of internet banking details of another person, impersonates them to use their funds. A Simple example would be: Lets say, I find...
Internet Fraud.
If you suspect internet fraud of any kind, contact your local electronic/internet crimes unit in your city if you have one. You can also contact the FBI and report fraud to them...
I actually don't think you can report coupon fraud on the internet. You might just want to go to the place where the coupon is redeemable. The cashiers should know.