https://www.cnbc.com/2018/01/10/police-tax-authorities-raid-south-korea-cryptocurrency-exchanges-for-tax-evasion.html >South Korea's largest cryptocurrency exchanges were raided by police and tax agencies this week for alleged tax evasion, people familiar with the investigation said on Thursday. >"A few officials from the National Tax Service raided our office this week," an official at Coinone, a major cryptocurrency exchange in South Korea, told Reuters.