https://www.cnbc.com/2018/06/19/south-korea-crypto-exchange-bithumb-says-it-was-hacked-coins-stolen.html

South Korea-based cryptocurrency exchange Bithumb said Wednesday it was temporarily suspending deposit and withdrawal services after about $30 million worth of cryptocurrency was stolen.

The Seoul-based operator said on Twitter that the stolen coins would be covered from Bithumb's own reserves and that all users' assets are being transferred to safer "cold wallet."