Access Control Matrix

An access control matrix is a security framework that defines and enforces permissions for different roles and entities interacting with a protocol. It maps specific users, such as administrators, governance tokens, or external contracts, to the functions they are authorized to perform.

By applying the principle of least privilege, this pattern ensures that only authorized entities can modify critical parameters like interest rates, collateral ratios, or emergency settings. In decentralized systems, this is often implemented through multi-signature wallets or role-based access control modules.

A well-defined matrix reduces the risk of insider threats or compromised keys, as it limits the blast radius of any single point of failure. It provides a structured, auditable trail of authority that is essential for maintaining trust in complex financial derivatives platforms.