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Maxim
@spikelov
🤖 MEV Bots — How They’re Stealing Your Money Ever tried to swap tokens and noticed someone bought the same amount just before you… then dumped it right after — into your buy? Congrats — you just got lightly bot-penetrated 😈 🔹WTF is MEV? *️⃣ MEV (Maximal Extractable Value) is profit gained by reordering transactions in a block. It used to be done by miners, now it’s mostly validators and bots that scan the mempool (a public “waiting room” for pending transactions). Every time you send a transaction to a DEX, it sits there for a bit — visible to everyone. Bots sniff it, figure out how to profit from it, and sneak in transactions around yours. That’s an MEV attack. 🔸Main Types of MEV Attacks 1️⃣ Sandwich Attack (a.k.a. double penetration — yeah,I made that up. You're welcome.) Bot sees you want to buy a token for 1 ETH It buys before you (front-running) You buy → price goes up Bot sells after you at a higher price 📌 You pay more.Bot makes free profit. RIP.
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Maxim
@spikelov
2️⃣ DEX Arbitrage Bot scans prices across DEXs Say: Uniswap = $1, SushiSwap = $1.02 → Buys on Uniswap → Sells on SushiSwap → Profit 📌 You don’t lose directly, but it increases gas and clogs the chain. 3️⃣ Liquidation Sniping On lending protocols like Aave or Solend: If someone’s loan becomes undercollateralized — anyone can liquidate it for a reward. 📌 MEV bots race to be first. Whoever gets it, wins the reward. 4️⃣ Backrunning Large buy already in block? Bot places a sell right after to take advantage of the price spike. No front-run — just clean, trailing profit. 5️⃣ Time-Bandit Attacks Rare, but powerful. A validator re-orgs previous blocks to replay profitable actions like liquidations or arbitrage. 📌 This is not just MEV — it’s a direct attack on blockchain consensus.
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Maxim
@spikelov
🛡️ Can You Protect Yourself? Partially — here’s how: *️⃣ Use private RPCs (1inch Fusion, MEV Blocker, Eden RPC) *️⃣ Avoid public mempool for big swaps *️⃣ Split large swaps — don’t drop 10 ETH in one go *️⃣ Use MEV-safe DEXs like CoW Swap (https://swap.cow.fi) or Osmosis / oswap
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