# Design

- [Design a Gradual Path Towards Immutability](/design/gradual-immutability-path.md)
- [Core/Periphery Design Pattern for Immutable Protocols](/design/core-periphery-design.md)
- [Actor-Based Threat Modeling](/design/actor-based-threat-modeling.md)
- [Principle of Least Privilege](/design/least-privilege.md)
- [Implement a Role-Based Access Control (RBAC) Model](/design/rbac.md)
- [Design for Funds Isolation](/design/funds-isolation.md)
- [Implement Circuit Breakers](/design/circuit-breakers.md)
- [Global Registry for Project Deployed Smart Contracts](/design/global-registry.md)