The most critical subjects covered in our audit are functional correctness, integration with external systems, and access control. Security regarding functional correctness is improvable due to potentially unexpected behaviour, see Unexpected staking of tokens. Security regarding integration with external systems is improvable due to slashing being unhandled for Kiln, see Unhandled stake slashing on Kiln.
The general subjects covered are gas efficiency, documentation, code complexity and error handling. Security regarding all the aforementioned subjects is high.
In summary, we find that the codebase provides a good but improvable level of security.
It is important to note that security audits are time-boxed and cannot uncover all vulnerabilities. They complement but don’t replace other vital measures to secure a project.