Skip to main content

Transaction Ordering Attacks

Definition

Transaction ordering attacks are a class of exploits in blockchain systems where malicious actors manipulate the sequence of transactions within a block to gain an unfair advantage. This can involve front-running, where an attacker sees a pending transaction and places their own transaction ahead of it to profit. Such attacks exploit the transparency of transaction pools and the control block producers have over transaction inclusion order. They undermine market fairness and network integrity.