The Sandbox confirms SAND cross-chain bridge vulnerability; Base and BSC networks affected, cross-chain functionality suspended.

The Sandbox officials announced that the team has confirmed and fully contained the recent SAND cross-chain bridge vulnerability incident, which involved the Base and BNB Smart Chain (BSC) networks. The incident’s impact is limited, with the number of tokens involved accounting for less than 0.01% of SAND’s total supply. SAND on Ethereum and Polygon remains unaffected; user wallets were not compromised, and no action is required for affected token holders or liquidity providers. Attackers minted unbacked SAND tokens on Base and BSC networks via the vulnerability, per disclosures. Currently, The Sandbox has shut down SAND cross-chain functionality on both networks. SAND on Base and BSC has been isolated and is temporarily non-transferable or non-exchangeable. The Sandbox reminds users not to buy, sell, or trade SAND on Base and BSC, as liquidity on these networks has been impacted. The team has completed a pre-incident snapshot, is developing a compensation plan for affected liquidity pool (LP) users, and continues to investigate the full scope of the vulnerability. A full incident report and technical post-mortem will be released later.