MEV (Maximal Extractable Value) refers to profit extracted from users by reordering transactions. Protect yourself from sandwich attacks and front-running.
Types of MEV Attacks
Sandwich Attack:
Your swap gets sandwiched between attacker transactions, causing worse execution.
Front-running:
Attacker sees your pending trade and executes first, profiting from price movement.
Protection Methods
Method
Protection
Ease
. . . .
. . . . . .
. . .
Flashbots Protect
High
Easy
Private RPC
High
Medium
High slippage awareness
Medium
Easy
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Step-by-Step Instructions
1
Understand MEV Risk
Large swaps and popular tokens are most targeted. Small trades on L2s are safer.
Tips
✓L2s have less MEV due to sequencer design
2
Add Flashbots Protect RPC
Add Flashbots RPC to MetaMask: rpc.flashbots.net
Tips
✓Transactions skip public mempool
3
Set Appropriate Slippage
Use tight slippage (0.5-1%) when possible. High slippage invites attacks.
Warnings
⚠Very low slippage may cause failed transactions
4
Use MEV-Protected DEXs
CoW Swap and other DEXs have built-in MEV protection.
Tips
✓CoW Swap batches trades to prevent MEV
5
Split Large Trades
Break large swaps into smaller pieces executed over time.
Tips
✓Reduces target size for attackers
6
Consider L2 Networks
Trade on Arbitrum, Base, or Optimism where MEV is less prevalent.
Tips
✓Sequencer design reduces MEV opportunities
Frequently Asked Questions
Put this guide into practice. See current yields.
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