# TECHNOLOGY

- [Security Stack](/docs/technology/security-stack.md): Secure by Default.
- [Umbra — Intelligent Firewall](/docs/technology/security-stack/umbra-intelligent-firewall.md)
- [Blackhole Diamond — Onchain Executor](/docs/technology/security-stack/blackhole-diamond-onchain-executor.md)
- [Routing & Execution Architecture](/docs/technology/routing-and-execution-architecture.md)
- [Monetization & Charge Fees](/docs/technology/monetization-and-charge-fees.md)