Collateral Ratio Exploitation

Collateral ratio exploitation happens when an attacker manipulates the system's ability to monitor or enforce the minimum collateral requirements for a loan. If a protocol fails to update the value of collateral in real-time or uses a flawed mechanism to assess risk, an attacker can withdraw funds while leaving the protocol under-collateralized.

This often involves creating a scenario where the protocol believes the collateral is worth more than it actually is, allowing the user to borrow against it and then abandon the position. It is a critical flaw in lending protocols that rely on automated liquidation engines.

When the engine fails to trigger due to a logic error in the collateral check, the protocol becomes insolvent. This type of attack is particularly dangerous during market crashes when collateral values drop rapidly, and the protocol's logic is tested to its absolute limit.

Robust collateral management requires strict, real-time valuation and aggressive liquidation triggers.