Definition

Sandwich Attack Prevention

Meaning ⎊ Methods used to protect traders from front-running and back-running bots that exploit transaction ordering.
Greeks.liveApril 7, 2026

Sandwich Attack Prevention

Sandwich attack prevention involves technical strategies to protect users from predatory trading where an attacker observes a pending transaction in the mempool and executes their own trades before and after it to manipulate the price. By front-running the user's trade, the attacker forces the user to execute at a worse price, then profits by reversing the trade on the other side of the user's transaction.

Prevention methods include using private transaction relays that bypass the public mempool, implementing slippage limits that automatically cancel trades if the price moves beyond a certain threshold, and utilizing protocols that bundle transactions to ensure atomic execution. Additionally, some decentralized exchanges have introduced features that randomize transaction ordering or introduce latency to discourage front-running.

Protecting against sandwich attacks is essential for maintaining a fair and equitable trading environment, especially for retail users who may not have the resources to defend against sophisticated bot-driven strategies. It remains a key focus area for developers aiming to improve the user experience in decentralized markets.

Liquidity Provider Risk Management
Double Spend
Transaction Atomicity Exploits
Brute Force Attack
Timing Analysis Attacks
Flash Loan Attack Surface
Game Theoretic Attack Vectors
Liquidation Cluster Analysis

Glossary

Trade Execution

Execution ⎊ Trade execution, within cryptocurrency, options, and derivatives, represents the process of carrying out a trading order in the market, converting intent into a realized transaction.

Order Flow

Flow ⎊ Order flow represents the totality of buy and sell orders executing within a specific market, providing a granular view of aggregated participant intentions.

Public Mempool

Architecture ⎊ The public mempool functions as a decentralized buffer where unconfirmed cryptocurrency transactions reside before node validation and block inclusion.

Private Transaction

Anonymity ⎊ Private transactions, within decentralized finance, represent a deliberate obfuscation of the direct link between transacting parties and the underlying asset flow.