# MEV Sandwich Attacks ⎊ Definition

**Published:** 2026-03-17
**Author:** Greeks.live
**Categories:** Definition

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## MEV Sandwich Attacks

MEV sandwich attacks occur when a malicious actor identifies a pending transaction in the public mempool and places their own transactions before and after it to profit from the resulting price shift. This predatory behavior exploits the transparent nature of blockchain transaction ordering.

The attacker buys the asset before the victim's trade to drive the price up, and then sells it immediately after the victim's trade executes at the higher price. This process effectively steals value from the user by artificially increasing their slippage.

It is a significant challenge in decentralized finance, particularly for traders who do not use private transaction relays. The phenomenon highlights the complexities of protocol physics and the need for robust mempool management.

Understanding these attacks is vital for traders seeking to minimize execution costs in decentralized environments.

- [Flash Loan Price Attacks](https://term.greeks.live/definition/flash-loan-price-attacks/)

- [MEV Extraction Tactics](https://term.greeks.live/definition/mev-extraction-tactics/)

- [Market Equilibrium Theory](https://term.greeks.live/definition/market-equilibrium-theory/)

- [Flashbots MEV Relays](https://term.greeks.live/definition/flashbots-mev-relays/)

- [Flashbots Architecture](https://term.greeks.live/definition/flashbots-architecture/)

- [Fair Value Accounting](https://term.greeks.live/definition/fair-value-accounting/)

- [Long Option Risk](https://term.greeks.live/definition/long-option-risk/)

- [Liquidation Threshold Logic](https://term.greeks.live/definition/liquidation-threshold-logic/)

## Discover More

### [Monetary Dilution](https://term.greeks.live/definition/monetary-dilution/)
![A detailed cross-section reveals concentric layers of varied colors separating from a central structure. This visualization represents a complex structured financial product, such as a collateralized debt obligation CDO within a decentralized finance DeFi derivatives framework. The distinct layers symbolize risk tranching, where different exposure levels are created and allocated based on specific risk profiles. These tranches—from senior tranches to mezzanine tranches—are essential components in managing risk distribution and collateralization in complex multi-asset strategies, executed via smart contract architecture.](https://term.greeks.live/wp-content/uploads/2025/12/multi-layered-collateralized-debt-obligation-structure-and-risk-tranching-in-decentralized-finance-derivatives.webp)

Meaning ⎊ The reduction in proportional ownership and value per token resulting from an increase in total supply.

### [Blockchain Network Optimization](https://term.greeks.live/term/blockchain-network-optimization/)
![A high-tech device with a sleek teal chassis and exposed internal components represents a sophisticated algorithmic trading engine. The visible core, illuminated by green neon lines, symbolizes the real-time execution of complex financial strategies such as delta hedging and basis trading within a decentralized finance ecosystem. This abstract visualization portrays a high-frequency trading protocol designed for automated liquidity aggregation and efficient risk management, showcasing the technological precision necessary for robust smart contract functionality in options and derivatives markets.](https://term.greeks.live/wp-content/uploads/2025/12/advanced-algorithmic-high-frequency-execution-protocol-for-decentralized-finance-liquidity-aggregation-and-risk-management.webp)

Meaning ⎊ Blockchain Network Optimization enhances protocol throughput and latency to support high-performance, institutional-grade decentralized derivatives.

### [Model Generalization](https://term.greeks.live/definition/model-generalization/)
![A composition of concentric, rounded squares recedes into a dark surface, creating a sense of layered depth and focus. The central vibrant green shape is encapsulated by layers of dark blue and off-white. This design metaphorically illustrates a multi-layered financial derivatives strategy, where each ring represents a different tranche or risk-mitigating layer. The innermost green layer signifies the core asset or collateral, while the surrounding layers represent cascading options contracts, demonstrating the architecture of complex financial engineering in decentralized protocols for risk stacking and liquidity management.](https://term.greeks.live/wp-content/uploads/2025/12/multi-layered-risk-stacking-model-for-options-contracts-in-decentralized-finance-collateralization-architecture.webp)

Meaning ⎊ The ability of a trading strategy to maintain its performance when applied to new, unseen market data.

### [Asymmetric Payoff Profiles](https://term.greeks.live/definition/asymmetric-payoff-profiles/)
![A detailed render illustrates an autonomous protocol node designed for real-time market data aggregation and risk analysis in decentralized finance. The prominent asymmetric sensors—one bright blue, one vibrant green—symbolize disparate data stream inputs and asymmetric risk profiles. This node operates within a decentralized autonomous organization framework, performing automated execution based on smart contract logic. It monitors options volatility and assesses counterparty exposure for high-frequency trading strategies, ensuring efficient liquidity provision and managing risk-weighted assets effectively.](https://term.greeks.live/wp-content/uploads/2025/12/asymmetric-data-aggregation-node-for-decentralized-autonomous-option-protocol-risk-surveillance.webp)

Meaning ⎊ A trade structure where potential profit significantly outweighs potential loss, creating a favorable risk-reward skew.

### [Token Circulation Supply](https://term.greeks.live/definition/token-circulation-supply/)
![A conceptual visualization of cross-chain asset collateralization where a dark blue asset flow undergoes validation through a specialized smart contract gateway. The layered rings within the structure symbolize the token wrapping and unwrapping processes essential for interoperability. A secondary green liquidity channel intersects, illustrating the dynamic interaction between different blockchain ecosystems for derivatives execution and risk management within a decentralized finance framework. The entire mechanism represents a collateral locking system vital for secure yield generation.](https://term.greeks.live/wp-content/uploads/2025/12/cross-chain-asset-collateralization-and-interoperability-validation-mechanism-for-decentralized-financial-derivatives.webp)

Meaning ⎊ The portion of a token's total supply that is actively available for trade, used to calculate accurate market valuations.

### [Rational Economic Behavior](https://term.greeks.live/definition/rational-economic-behavior/)
![A layered architecture of nested octagonal frames represents complex financial engineering and structured products within decentralized finance. The successive frames illustrate different risk tranches within a collateralized debt position or synthetic asset protocol, where smart contracts manage liquidity risk. The depth of the layers visualizes the hierarchical nature of a derivatives market and algorithmic trading strategies that require sophisticated quantitative models for accurate risk assessment and yield generation.](https://term.greeks.live/wp-content/uploads/2025/12/nested-smart-contract-collateralization-risk-frameworks-for-synthetic-asset-creation-protocols.webp)

Meaning ⎊ The assumption that market participants make logical decisions that maximize their own benefits and utility.

### [Negative Gamma](https://term.greeks.live/definition/negative-gamma/)
![A detailed abstract visualization of complex, overlapping layers represents the intricate architecture of financial derivatives and decentralized finance primitives. The concentric bands in dark blue, bright blue, green, and cream illustrate risk stratification and collateralized positions within a sophisticated options strategy. This structure symbolizes the interplay of multi-leg options and the dynamic nature of yield aggregation strategies. The seamless flow suggests the interconnectedness of underlying assets and derivatives, highlighting the algorithmic asset management necessary for risk hedging against market volatility.](https://term.greeks.live/wp-content/uploads/2025/12/visualizing-complex-options-chain-stratification-and-collateralized-risk-management-in-decentralized-finance-protocols.webp)

Meaning ⎊ A position where a trader is short options and must trade against the trend to maintain a delta-neutral hedge.

### [Supply Squeeze Dynamics](https://term.greeks.live/definition/supply-squeeze-dynamics/)
![A high-tech conceptual model visualizing the core principles of algorithmic execution and high-frequency trading HFT within a volatile crypto derivatives market. The sleek, aerodynamic shape represents the rapid market momentum and efficient deployment required for successful options strategies. The bright neon green element signifies a profit signal or positive market sentiment. The layered dark blue structure symbolizes complex risk management frameworks and collateralized debt positions CDPs integral to decentralized finance DeFi protocols and structured products. This design illustrates advanced financial engineering for managing crypto assets.](https://term.greeks.live/wp-content/uploads/2025/12/high-frequency-trading-algorithmic-execution-model-reflecting-decentralized-autonomous-organization-governance-and-options-premium-dynamics.webp)

Meaning ⎊ Market condition where limited supply meets high demand, causing rapid price spikes and potential volatility.

### [MEV Bot Behavior Analysis](https://term.greeks.live/definition/mev-bot-behavior-analysis/)
![A high-tech component featuring dark blue and light cream structural elements, with a glowing green sensor signifying active data processing. This construct symbolizes an advanced algorithmic trading bot operating within decentralized finance DeFi, representing the complex risk parameterization required for options trading and financial derivatives. It illustrates automated execution strategies, processing real-time on-chain analytics and oracle data feeds to calculate implied volatility surfaces and execute delta hedging maneuvers. The design reflects the speed and complexity of high-frequency trading HFT and Maximal Extractable Value MEV capture strategies in modern crypto markets.](https://term.greeks.live/wp-content/uploads/2025/12/precision-algorithmic-trading-engine-for-decentralized-derivatives-valuation-and-automated-hedging-strategies.webp)

Meaning ⎊ Studying automated trading bot strategies to understand how they influence market efficiency and extract value from order flow.

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**Original URL:** https://term.greeks.live/definition/mev-sandwich-attacks/