Recursive Call Exploits

Recursive call exploits leverage the ability of smart contracts to call other contracts, creating a loop that can be used to drain protocol funds. By triggering a function that makes an external call, an attacker can force the original contract to pause and execute the attacker's code, which then calls the original function again.

This cycle repeats until the protocol's liquidity is depleted or the transaction gas limit is reached. These exploits are highly effective against contracts that do not properly protect their state or manage their execution flow.

Protecting against these requires a deep understanding of the EVM execution model and the implementation of strict access controls and state locking mechanisms. They represent a significant threat to any protocol that interacts with external, untrusted code.