Upbit, Bithumb, Coinone place DOT on delisting watchlist

South Korean exchanges Upbit, Bithumb, and Coinone announced they have placed Polkadot (DOT) on their delisting watchlists. Bithumb explained that the designation follows the confirmation of a security incident, such as a hack with an unconfirmed or unaddressed cause, affecting the asset's wallet or distributed ledger.