According to CoinMeta, Upbit issued a notice stating that signs of potential security issues were detected in the The Sandbox (SAND) network. On August 22, 2026, a suspected security incident occurred in the SAND network, which could lead to increased market price fluctuations. Upbit reminds users holding SAND assets to pay attention to the developments and trade cautiously. Currently, Upbit has not disclosed specific details about the attack or the extent of losses, but has provided relevant on-chain transaction addresses for inquiry. Previously, a suspected security vulnerability was found in the native token SAND of the Base network; attackers obtained the authority to mint tokens and were able to issue additional SAND tokens at will.