The Current State of Coupon Fraud (and how to prevent it) Coupon fraud takes many forms, here are some of the most common practices: Claiming Unrelated Products a.k.a Decoding Scammers intentionally apply coupons to the wrong products and coerce the cashier to accept them. For example, using a coupon for 12oz of soap on the 18oz bottle. Mass printing or gang cut coupons