Dear OKX Users,
With the increasing frequency of MEV (Maximal Extractable Value) attacks on-chain, OKX Web3 Wallet has integrated Flashbots protection in its latest app version (v6.31.0) to safeguard users against MEV exploits.
When using the Web3 Wallet → Trade → Swap & Cross-Chain feature, OKX Web3 Wallet effectively prevents sandwich attacks—a common form of MEV exploitation.
What Is an MEV Sandwich Attack?
- Scanning Memory Pool: Attackers monitor the blockchain’s mempool to identify high-value transactions.
- Front-Running: The attacker submits their own swap transaction with higher gas fees, ensuring it gets processed before the victim’s transaction.
- Price Manipulation: This artificially inflates the token price, forcing the victim to pay more.
- Profit Extraction: After the victim’s transaction completes, the attacker sells their tokens at a profit.
- The "Sandwich" Effect: The attacker’s buy-sell actions "sandwich" the victim’s trade, siphoning value from it.
How Does OKX Web3 Wallet Prevent MEV Attacks?
- Enable MEV Protection: During any swap, click "More" → "MEV Protection" to toggle the feature.
- Private Transaction Routing: Transactions are sent to trusted third-party relays (e.g., Flashbots private pools) instead of public mempools, preventing order manipulation.
OKX Web3 Wallet remains committed to delivering secure, user-centric DeFi solutions.
FAQs
Q1: What is MEV in DeFi?
MEV refers to profits extracted by manipulating transaction order (e.g., front-running, sandwich attacks).
Q2: Does MEV protection slow down transactions?
No. Flashbots pools prioritize privacy and efficiency without compromising speed.
Q3: Are there fees for MEV protection?
OKX currently offers this feature free of charge.
👉 Learn more about Web3 security