Protect Your Web3 Project from Front-Running and Sandwich Attacks
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Sandwich Attacks – Bracket victim trades with buy/sell orders, forcing worse prices and capturing the spread.
The Hidden Danger of Maximal Extractable Value (MEV)
Guardrail’s real-time monitoring protects against front-running and sandwich attacks
- Detects suspicious gas fee spikes designed to jump the queue.
- Simulates transaction flows to identify sandwiching or other predatory strategies before they settle.
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Our platform can be configured to take immediate action upon detecting a front-running attempt. This can include:
- Transaction Blocking: We can block the malicious transaction from being executed, preventing the attack from succeeding.
- Automated Alerts: Your team receives an instant notification about the detected threat, allowing for manual intervention or a review of the situation.
- Transaction Obfuscation: By utilizing private transaction services, we can help protect your users' transactions from being visible in the public mempool in the first place, thereby completely eliminating the opportunity for attackers.
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Guards provide complete security coverage of every onchain
Frequently Asked Questions
Losses vary, but studies estimate hundreds of millions are drained annually through MEV exploits. Even small swaps can suffer significant slippage, damaging trust in your protocol.
Any chain with a public mempool (Ethereum, BNB Chain, Polygon, etc.) is exposed. Networks with high traffic and DEX usage face more frequent front-running and sandwich attacks.
Private relays help hide transactions, but they don’t eliminate all risks. Attackers can still exploit ordering in other ways. A multi-layered defense like Guardrail is more reliable.
Arbitrage can improve market efficiency by balancing prices across exchanges. Predatory MEV (front-running, sandwiching) extracts value directly from users, leaving them worse off.
Guardrail monitors the mempool in real time. Once suspicious behavior is detected, it can automatically simulate, block, or obfuscate transactions within seconds.
Even if you increase gas fees, attackers can outbid you. Attackers profit from the transaction’s impact, not just the fee. Defense requires smarter protection than fee manipulation.
DEXs, DeFi protocols, NFT marketplaces, and any platform processing high-value or high-volume transactions are prime targets for attacks. Protecting these ensures user confidence and liquidity.
Get Guardrail to secure your assets onchain today
