MEV 机器人返还 Ronin 网桥意外流失的 1000 万美元

8 月 6 日，最大可提取价值 (MEV) 机器人从 Ronin 网桥耗尽了近 3,996 以太币 (ETH)，现已返还几乎所有资金

A bot that drained nearly 3,996 Ether (ETH) from the Ronin network bridge on Aug. 6 has returned almost all of the funds, according to data from block explorer Etherscan. This suggests that the bot may have accidentally front-run the attack. At the time the ETH was returned, it was valued at over $10 million.

根据区块浏览器 Etherscan 的数据，8 月 6 日，一个机器人从 Ronin 网桥耗尽了近 3,996 以太币 (ETH)，现已返还几乎所有资金。这表明机器人可能意外地抢先了攻击。当 ETH 被返还时，其价值超过 1000 万美元。

The bot returned the funds at 3:04 pm UTC. A total of 3,991 ETH was transferred to the Ronin team, while the remaining 5 ETH has not been returned. The Ronin team announced the return on social media platform X and stated that the bot’s owner was being rewarded $500,000 for discovering the exploit.

该机器人于世界标准时间下午 3:04 返还资金。总计3,991 ETH被转给Ronin团队，其余5 ETH尚未归还。 Ronin 团队在社交媒体平台 X 上宣布回归，并表示该机器人的所有者将因发现该漏洞而获得 50 万美元的奖励。

The team said it will only allow the bridge to be reopened after the vulnerability is patched and an audit is performed.

该团队表示，只有在修补漏洞并进行审核后，才会允许桥梁重新开放。

MEV bots are programmed to copy transactions and pay a higher gas fee to execute them first if doing so is profitable. For this reason, they sometimes accidentally exploit protocols. If an attacker attempts to exploit a protocol but fails to pay a high enough gas fee, for example, an MEV bot may automatically copy the attack and drain a protocol of funds. In these cases, the bot’s owner will usually return the funds to the victim, as has happened in this case.

MEV 机器人被编程为复制交易并支付更高的汽油费来首先执行它们（如果这样做有利可图）。因此，他们有时会意外地利用协议。例如，如果攻击者尝试利用协议但未能支付足够高的汽油费，MEV 机器人可能会自动复制攻击并耗尽协议资金。在这些情况下，机器人的所有者通常会将资金退还给受害者，正如本例中所发生的那样。

The drained funds were initially reported to be worth $9.8 million. However, the price of ETH has increased since then, making the returned funds now worth more than $10 million.

据报道，被抽走的资金最初价值 980 万美元。然而，此后 ETH 的价格上涨，使得返还的资金现在价值超过 1000 万美元。

In July, a similar incident occurred when an MEV bot drained the Rho Markets protocol of over $8 million. The bot’s owner later returned all of the funds.

7 月，发生了类似事件，MEV 机器人耗尽了 Rho Markets 协议超过 800 万美元。该机器人的所有者后来退还了所有资金。

Ronin was also exploited for over $600 million in March 2022. It is home to Axie Infinity, a Web3 game that claims to have over 2.7 million users.

Ronin 还在 2022 年 3 月被利用，损失超过 6 亿美元。它是 Axie Infinity 的所在地，这是一款声称拥有超过 270 万用户的 Web3 游戏。