2025-12-30 10:28:04

I made a $10,000 trade on a certain DEX, the transaction was confirmed, and when I opened my wallet—what's going on, I lost 1.8%?

It must be price slippage, right?

Wrong! Completely wrong!!

Check your transaction history on the block explorer. You'll find an interesting phenomenon: there is a transaction before and after yours. The one before? Front-run by a bot. The one after? Also a bot.

Your order was sandwich attacked. This is what’s called MEV—Miner Extractable Value. Bots observe the mempool, buy in front of your transaction to push up the price, then your large trade drives the price higher, and finally, they sell after your transaction completes to profit.

That 1.8% you lost was just eaten up by bots. This is what really happened.

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RuntimeError

· 14h ago

Damn, got snatched again? This MEV is really outrageous.

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GrayscaleArbitrageur

· 14h ago

Whoa, is this being sandwiched? I thought I just slipped up, but it turns out the robot is eating my orders.

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DeFiDoctor

· 14h ago

The consultation record shows that this guy's 1.8% isn't slippage, but was eaten away by a sandwich attack. Front and back attacks, the bot profits from the spread—this tactic is common in Ethereum mempool, but few retail investors truly understand the essence of MEV. It is recommended to regularly review transaction details and not just focus on price charts.

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ForkItAll

· 14h ago

Now I understand, my 1.8% was just siphoned off by these robot mosquitoes.

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BankruptcyArtist