Apart from this, Coinone is also being investigated by Korean police to offer illegal gambling services to investors. The National Tax Service of this country has examined the site of Bithumb and Coinone. These South Korean regulators have begun investigations of two major cryptocurrency exchanges.
Coinone Also Investigated by Police
Tax Authority Investigating Bithumb and Coinone
source - https://news.bitcoin.com/korean-regulators-launch-investigations-bithumb-coinone-crypto-exchanges/