A Good Samaritan or a Fraudster?

Bing’s parent has sent a legal team to tackle a loophole on Bing Cashback, as reported by pcworld.com. A Cashback member (who coincidently owns a price-comparison website) publicized the error regarding Cashback program (read Bing's cache here). The member explained the weakness of Cashback system called a tracking pixel, where a fraudster can fake transactions and be eligible to receive Cashback rewards without purchasing anything. http://tinyurl.com/yfgzojn