https://www.cnbc.com/2017/12/29/south-korea-students-dive-into-virtual-coins-even-as-regulators-crack-down.html >Hackers have stolen millions, lawmakers are pushing for new taxes and regulations, and a leading financial official has called them a "Ponzi scheme". >But that hasn't cooled a frenzy for bitcoin and other virtual currencies that is gripping young investors in South Korea.