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Odaily News, The Sandbox has released a post-mortem report on the August 22 vulnerability incident. The report shows that attackers exploited vulnerabilities in contracts related to cross-chain configurations on Base and BNB Smart Chain (BSC), stealing 14,742,341.84 SAND from the Ethereum treasury, accounting for approximately 0.5% of the maximum supply, with an estimated economic impact of approximately $1.4968 million, of which about $987,000 was actually retained by the attackers. The Ethereum mainnet and Polygon network were not affected. Until further notice, please do not purchase or send SAND on Base or BNB Smart Chain. Contracts deployed on Base and BNB Smart Chain have been permanently deactivated and will not be reopened. The Sandbox stated that the team has reported the attacker's wallet address to blockchain analysis firms TRM Labs and Chainalysis, and has communicated directly with relevant exchanges. The Sandbox also announced a compensation plan, which will compensate wallets that legitimately held cross-chain SAND on Base or BSC prior to the incident at a 1:1 ratio in Ethereum SAND. Compensation funds will come from The Sandbox treasury, with no new tokens issued. The claim process will open within the next two weeks and remain open for two weeks.
The Sandbox has officially confirmed and fully secured the recent SAND cross-chain bridge vulnerability affecting the Base and BNB Smart Chain (BSC) networks. Attackers exploited the flaw to mint uncollateralized SAND tokens across both networks, but the impact remains limited, accounting for less than 0.01% of the total SAND supply. SAND on Ethereum and Polygon, along with user wallets, remain unaffected. The Sandbox has since disabled cross-chain functionality on both networks. SAND on Base and BSC has been isolated and is temporarily non-transferable and non-redeemable. The official team advises users to avoid buying, selling, or trading SAND on the aforementioned networks.
Odaily News: Upbit stated that on August 22, it detected a suspected security issue on the SAND network, which could lead to wider price fluctuations, and reminded users to trade with caution. Bithumb has also issued a similar risk alert. Currently, SAND spot trading on both exchanges remains operational.