즉, 2017년 4월 야피존 거래소가 해킹을 당해 총 3,831BTC(당시 약 55억원 상당)가 인출된 바 있다.
In other words, in April 2017, a total of 3,831 BTC (about 5.5 billion won at the time) was withdrawn after the Yapizon exchange was hacked.