Korea's cryptocurrency exchange, Upbit, has announced the suspension of its deposit and withdrawal services following the detection of approximately $37 million in unusual activity related to Solana tokens. This decision was made to ensure the security of users' funds and to conduct a thorough investigation into the suspicious transactions that raised concerns amongst the platform's management. As a result, customers will temporarily be unable to deposit or withdraw Solana tokens until the situation is fully assessed and resolved.
source: https://www.coindesk.com/markets/2025/11/27/korea-s-upbit-suspends-deposit-and-withdrawal-service-after-abnormal-activity-in-solana-tokens