Sandwich Attack Prevention
Sandwich attacks (also called MEV/maximal extractable value exploitation) occur when attackers see pending transactions (mempool), place their own before/after to extract value. Example: front-run a swap, then back-run to sell. Prevention involves private mempools (dark pools), threshold encryption, MEV-resistant consensus, and transaction ordering commitments. Critical for DEXs, blockchain protocols, and trading systems. Learnable in 6–8 weeks with blockchain fundamentals. Salaries $150K–$220K+ for blockchain security engineers. Overlaps with cryptography, smart contracts, and protocol design.
What is Sandwich Attack Prevention
A sandwich attack is a form of MEV (Maximal Extractable Value) exploitation where an attacker observes a pending transaction in the mempool, front-runs it (places a transaction before), profits from the price movement, then back-runs it (places a transaction after). Example: Attacker sees user swapping 1 ETH for USDC, front-runs with a swap to drive up USDC price, watches user execute at worse price, then sells USDC for profit. Prevention strategies include:
💰 Salary by region
| Region | Junior | Mid | Senior |
|---|---|---|---|
| USA | $120k | $180k | $260k |
| UK | $75k | $110k | $160k |
| EU | $80k | $120k | $180k |
| CANADA | $110k | $170k | $250k |
🎓 Certifications
🎯 Careers using Sandwich Attack Prevention
❓ FAQ
What exactly is a sandwich attack?
How much can an attacker extract?
What's MEV?
Does threshold encryption prevent sandwich attacks?
Do L2s (Arbitrum, Optimism) have sandwich attack risk?
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