一个加密货币交易员在交换stablecoins时损失了超过215,000美元的三明治攻击

该事件发生在UNISWAP V3的USDC-USDT流动性池中，再次暴露了最大可提取价值（MEV）机器人的利用

A crypto trader fell victim to a sandwich attack on March 12 while swapping stablecoins on Uniswap v3, sti米晴coins. The incident, which occurred on Uniswap v3’s USDC-USDT liquidity pool, showcases how Maximum Extractable Value (MEV) bots exploit traders in decentralized finance (DeFi).

一名加密货币交易员于3月12日在三明治攻击中遇到了遇难者，同时交换了stablecoins在STI coins的Uniswap V3上。该事件发生在UNISWAP V3的USDC-USDT流动性池上，展示了如何最大的可提取价值（MEV）机器人利用分散融资（DEFI）的交易者。

The trader intended to exchange $220,764 in USD Coin (USDC) for Tether (USDT). However, a bot intervened within eight seconds, disrupting the trade and leaving the trader with a mere $5,271 in USDT.

交易者打算将美元硬币（USDC）的$ 220,764换成Tether（USDT）。但是，一个机器人在八秒钟内进行了干预，破坏了交易，并在USDT中仅以5,271美元的价格离开了交易员。

The trader planned to swap 220,764 USDC for USDT on Uniswap v3. An MEV bot intervened and pulled all the USDC liquidity from the pool before the trader’s trade could go through. Afterwards, the bot put the liquidity back into the pool.

交易者计划将220,764 USDC换成UNISWAP V3。 MEV机器人进行了干预，并在交易者交易进行之前，将所有USDC的流动性从游泳池中抽出。之后，机器人将流动性重新回到游泳池中。

As the bot had no liquidity to pay for the trader’s trade, it had to accept a bad price to complete the swap, leaving the trader with a small amount of USDT.

由于该机器人没有流动性来支付交易者的交易，因此必须接受不良的价格才能完成互换，从而使交易员拥有少量的USDT。

According to Michael Nadeau, founder of The DeFi Report, the attacker paid Ethereum block builder “bob-the-builder.eth” a $200,000 tip from the total amount while keeping $8,000 as profit.

根据DEFI报告的创始人迈克尔·纳多（Michael Nadeau）的说法，攻击者向以太坊建筑商“ Bob-the-Builder.eth”支付了20万美元的提示，同时将8,000美元作为利润保留。

DeFi researcher “DeFiac” noted that the same trader, using different wallets, might have been hit by six similar sandwich attacks within a single day. Two other wallets, “0xDDe…42a6D” and “0x999…1D215,” were also targeted, with one losing $138,838 and the other $128,003.

Defi研究人员“ Difiac”指出，使用不同钱包的同一交易员可能会在一天之内受到六次类似的三明治攻击的打击。另外两个钱包“ 0xdde…42a6d”和“ 0x999…1d215”也是针对的，其中一个损失了$ 138,838，另外一个损失了128,003美元。

Some theorize that these unusual swaps might be an attempt at money laundering. DefiLlama developer 0xngmi suggested that these trades could be intentionally bad, used to clean illicit funds by routing transactions privately to an MEV bot.

有人认为这些不寻常的掉期可能是洗钱的尝试。 Defillama开发人员0xngmi建议这些交易可能是故意不好的，用于通过将交易将交易私人路由到MEV机器人进行清洁。

Initially, some blamed Uniswap for the incident. However, CEO Hayden Adams clarified that these transactions didn’t occur through Uniswap’s official interface, which has MEV protection and slippage settings to help prevent such attacks.

最初，一些事件指责UNISWAP。但是，首席执行官海顿·亚当斯（Hayden Adams）澄清说，这些交易不是通过Uniswap的官方界面进行的，该界面具有MEV保护和滑动设置，以帮助防止此类攻击。

This isn’t the first time we’ve seen traders targeted and nearly wiped out by sandwich attacks. Earlier this year, a trader put in 732,000 to be used for a swap but ended up with only 19,000 due to a similar trick.

这并不是我们第一次看到交易者的目标，几乎被三明治攻击所淘汰。今年早些时候，一名交易员投入了732,000次交换，但由于类似的技巧，最终仅获得了19,000。