# Back Running ⎊ Area ⎊ Resource 2

---

## What is the Mechanism of Back Running?

Back running is a predatory trading strategy where an actor observes a pending transaction in a blockchain's mempool and executes a new transaction immediately after it to profit from the resulting price movement. This technique exploits the public visibility of transaction data before it is included in a block. The back runner typically submits a transaction with a higher gas fee to ensure their order is processed directly following the target transaction, capitalizing on the price impact of the initial trade. This practice is a form of Maximal Extractable Value (MEV) extraction, specifically targeting large trades that cause significant price shifts in decentralized exchange liquidity pools.

## What is the Consequence of Back Running?

The primary consequence of back running is a reduction in execution quality for the original trader, resulting in a worse price than initially anticipated. This hidden cost, often referred to as slippage, diminishes the profitability of large trades and creates an unfair market environment for retail participants. The practice also contributes to network congestion as bots compete to secure favorable transaction ordering, driving up gas fees for all users. This dynamic can erode trust in decentralized financial systems by creating an uneven playing field.

## What is the Mitigation of Back Running?

Mitigation strategies for back running focus on reducing the transparency of pending transactions and implementing fair ordering mechanisms. Private transaction relays allow users to submit orders directly to block builders without broadcasting them to the public mempool, eliminating the opportunity for observation and exploitation. Protocols like SUAVE aim to create a unified order flow where transactions are processed fairly, preventing malicious reordering. These solutions seek to protect users from value extraction and improve overall market efficiency.


---

## [Flash Loan Price Manipulation](https://term.greeks.live/term/flash-loan-price-manipulation/)

## [Transaction Manipulation](https://term.greeks.live/term/transaction-manipulation/)

## [Adversarial Capital Speed](https://term.greeks.live/term/adversarial-capital-speed/)

## [Order Book Thinning Effects](https://term.greeks.live/term/order-book-thinning-effects/)

## [Delta Sensitivity](https://term.greeks.live/term/delta-sensitivity/)

## [Order Book Data Ingestion](https://term.greeks.live/term/order-book-data-ingestion/)

## [Funding Rate Manipulation](https://term.greeks.live/term/funding-rate-manipulation/)

## [MEV Liquidation Front-Running](https://term.greeks.live/term/mev-liquidation-front-running/)

## [Order Book Impact](https://term.greeks.live/term/order-book-impact/)

## [Order Book Order Flow Analysis](https://term.greeks.live/term/order-book-order-flow-analysis/)

## [Adversarial Game](https://term.greeks.live/term/adversarial-game/)

## [Transaction Ordering Manipulation](https://term.greeks.live/term/transaction-ordering-manipulation/)

## [Gas Front-Running Mitigation](https://term.greeks.live/term/gas-front-running-mitigation/)

## [Market Front-Running Mitigation](https://term.greeks.live/term/market-front-running-mitigation/)

## [Front-Running Resistance](https://term.greeks.live/term/front-running-resistance/)

## [Front-Running Mitigation Strategies](https://term.greeks.live/term/front-running-mitigation-strategies/)

## [Decentralized Exchange Arbitrage](https://term.greeks.live/term/decentralized-exchange-arbitrage/)

## [Front-Running Arbitrage](https://term.greeks.live/term/front-running-arbitrage/)

## [Transaction Mempool Monitoring](https://term.greeks.live/term/transaction-mempool-monitoring/)

## [Front-Running Liquidation](https://term.greeks.live/term/front-running-liquidation/)

## [Priority Fee Auction](https://term.greeks.live/term/priority-fee-auction/)

## [Front-Running Oracle Updates](https://term.greeks.live/term/front-running-oracle-updates/)

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---

**Original URL:** https://term.greeks.live/area/back-running/resource/2/