A former Microsoft software engineer from Ukraine has been sentenced to nine years in prison for stealing more than $10 million in store credit from Microsoft’s online store. Ars Technica reports: From 2016 to 2018, Volodymyr Kvashuk worked for Microsoft as a tester, placing mock online orders to make sure everything was working smoothly. The software automatically prevented shipment of physical products to testers like Kvashuk. But in a crucial oversight, it didn’t block the purchase of virtual gift cards. So the 26-year-old Kvashuk discovered that he could use his test account to buy real store credit and then use the credit to buy real products. At first, Kvashuk bought an Office subscription and a couple of graphics cards. But when no one objected to those small purchases, he grew much bolder. In late 2017 and early 2018, he stole millions of dollars worth of Microsoft store credit and resold it online for bitcoin, which he then cashed out using Coinbase. US prosecutors say he netted at least $2.8 million, which he used to buy a $160,000 Tesla and a $1.6 million waterfront home (his proceeds were less than the value of the stolen credit because he had to sell at a steep discount). Kvashuk made little effort to cover his tracks for his earliest purchases. But as his thefts got bigger, he took more precautions. He used test accounts that had been created by colleagues for later thefts. This was easy to do because the testers kept track of test account credentials in a shared online document. He used throwaway email addresses and began using a virtual private networking service. Before cashing out the bitcoins, he sent them to a mixing service in an attempt to hide their origins. Kvashuk reported the bitcoin windfall to the IRS but claimed the bitcoins had been a gift from his father.

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