A former Microsoft engineer who stole $10 million from the tech giant has been found guilty of fraud and now faces up to 20 years in prison. Volodymyr Kvashuk worked at Microsoft from 2016 to 2018 and stole digital currency from his former employer. He then used the money gained from the sale of gift cards to buy a lakefront mansion for $1.6 million and a $160,000 Tesla.According to court documents , Kvashuk was part of a group of software testers working on the "Universal Store Team" (UST). The team is tasked with making sure that purchases made through the Microsoft Store pass through the system smoothly. Test accounts were set up and whitelisted by Microsoft so members of the UST could carry out test transactions. The system was set up in a way that blocked the physical delivery of goods. Microsoft, however, did not anticipate users buying, "currency store value" (digital currency/gift cards) and failed to put in a preventative measure. Although testers were not authorised to purchase digital currency, if they did, a product key that could still be redeemed was produced.An investigation by Microsoft's Fraud Investigation Strike Team (FIST), noticed an increase in the number of gift cards being used to purchase subscriptions to Xbox Live. FIST found that these stolen gift cards were being sold on key re-selling websites such as g2a.com, and they had originated from three whitelisted UST test accounts. These accounts purchased a total of $10.1 million in digital currency with $1.8 million being blacklisted by Microsoft. This resulted in an $8.3 million loss for the company. Microsoft's investigation found Kvaushuk to be behind the three test accounts.The document then states that Kvaushuk converted $2.8 million in profits into cryptocurrency in a bid to conceal money gained from the fraud. In tax returns, he said the cryptocurrency was a gift from family members.After a five day trial in the US District Court in Seattle, Volodymyr Kvaushuk was found guilty on several charges relating to wire fraud and money laundering. A Microsoft spokesperson told Business Insider , "When we learned of this misconduct we investigated, terminated his employment, and then referred the matter to law enforcement. The US Department of Justice conducted [its] own investigation and prosecution, which resulted in a guilty verdict."Kvashuk will be sentenced on June 1st. He faces up to 20 years in prison.