Bithumb is the most widely used platform in Korea since it has multiple positive characteristics and its security level is high since it has many verification factors. It is one of the best platforms if you use currencies such as: (ETH, BTC, KRW, USD). Its exchange range is based on the user's levels and these levels are granted by the level of authentication you enter the platform, such as Korean phone verification, documentation scanning. This platform suffered security failures a few years ago and was hacked taking millions of dollars with it, which is why its security settings are currently one of the best on exchange platforms.