A dubious payments loophole has been reported relating to Overstock.com, the giant online retailer. Expert security journalist Brian Krebs posted a report on his website on January 9th, telling of a glitch in Overstock\'s cryptocurrency payments system. Owing to confusion between bitcoin (BTC) and bitcoin cash (BCH), customers might have been able to reap substantial cryptocurrency rewards by repeatedly ordering and cancelling big-ticket items.

Krebs was advised by security firm, Bancsec, that Overstock.com had mistakenly accepted his BCH payment for an item. The payment should have been made in BTC, which has approximately six times the value of BCH.

To confirm the security firm\'s advice, Krebs made a trial order on Overstock.com of an item worth $78, opting to make his payment in BTC. Krebs described the process of making the payment via his Coinbase wallet, pasting the bitcoin address for the item into the field named \"pay to.\" He then instructed Coinbase to send an amount of 0.00475574 in BCH instead of in BTC, which was accepted. The $78 purchase was thus processed by sending an amount worth only around $12.

According to Bancsec, Overstock not only approved the transaction, but also refunde