加密貨幣交易所幣安開發的 BNB Chain 7 日清晨驚傳遭駭!官方跨鏈橋(BSC Token Hub)被駭客盜走大量資產,損失金額高達數億美元。據 BscScan 數據,該鏈已暫停出塊(最後出塊為 6 點)。
幣安創辦人 CZ 也緊急出面強調用戶資金安全,攻擊細節正在調查:
對跨鏈橋 BSC Token Hub 利用導致額外的 BNB,我們已要求所有驗證者暫停 BSC。問題包含在內。您的資金是安全的。對於造成的不便,我們深表歉意,並提供進一步更新。
An exploit on a cross-chain bridge, BSC Token Hub, resulted in extra BNB. We have asked all validators to temporarily suspend BSC. The issue is contained now. Your funds are safe. We apologize for the inconvenience and will provide further updates accordingly.
— CZ 🔶 Binance (@cz_binance) October 6, 2022
遭攻擊金額超過 7 億?
由於事件剛發生不久,總損失金額未確定。據社群人士分析,攻擊者疑似盜取 200 萬枚 BNB(現價約 5.7 億美元)、ETH 等約 8 千萬美元資產、轉移到其他鏈的數千萬元資產。有鏈分析師推估最高損失到 7.18 億美元。
Researchers have detected an unusual transaction of $718M $ on the BSC network, the meaning of this is not clear at the moment, but many are already talking about a possible hack 🤷♂️https://t.co/GWInEBySM5
— CIA Officer (@officer_cia) October 6, 2022
So in summary as of now:
* 2mm $BNB ($550mm) withdrawn from Bridge
* * half of that used to mint misc. stables
* * Small amount swapped for stables directly
* stables bridged everywhere
* ~$50mm $ETH buy on mainnet
* ~$20mm $ETH borrowed: TraderJoe + Geist
* $10mm $USDT frozen— GREEN JEFF (The Bread #9) (@jeffthedunker) October 6, 2022
據 DeBank 數據,標記為攻擊者的錢包,截稿前有 5.4 億美元資產。
不過幣安創辦人 CZ 推文,表示攻擊總損失金額約 1 億美元,與鏈數據結果相差巨大,尚待再釐清。
The current impact estimate is around $100m USD equvilent, about a quarter of the last BNB burn.
— CZ 🔶 Binance (@cz_binance) October 7, 2022
BNB 秒跌 5%
同時 BNB 價格方面,遭攻擊消息一公開,BNB 2 小時內快速下跌近 5%,但截稿前已有回升,現報 286.3 美元。