This week security experts found a website glitch on the e-commerce marketplace Overstock that let customers purchase items for a fraction of the price. The reason users were getting such huge discounts is because the system was accidentally allowing bitcoin cash (BCH) purchases in place of items priced in bitcoin core (BTC).
‘Big Discounts’: Some Overstock Customers Pay for Items Priced in BTC With BCH
If things couldn’t get any worse, they did: Krebs decided to get a refund for the three solar lamps purchased with BCH.
“I didn’t really want the solar lights, but also I had no interest in ripping off Overstock,” explains the Krebs employee.
So I canceled the order — To my surprise, the system refunded my purchase in bitcoin, not bitcoin cash.
Payment Glitch Lasted for Three Weeks
“After working with a researcher to confirm the findings, that method of payment was disabled while we worked with our cryptocurrency integration partner, Coinbase, to ensure they resolved the issue,” explains Overstock to Krebs. “We have since confirmed that the issue described in the finding has been resolved, and the cryptocurrency payment option has been re-enabled.”
Coinbase revealed to Krebs that the bug existed for “three weeks” and the issue was caused by the merchant partner “improperly using the return values” in the company’s merchant integration API.
Source from News.bitcoin/Images via Shutterstock, Overstock, and the bitcoin cash logo.