LP-0006: Security

Abstract

This document establishes Lux Network's security principles, threat model, and security practices. Security is not a feature—it is a foundational requirement that influences every design decision across the network.

Motivation

Blockchain networks hold significant value and face constant adversarial pressure. A comprehensive security framework ensures:

Consistent security practices across all components
Clear threat models for design decisions
Rapid response capabilities for vulnerabilities
Trust from users, validators, and developers

Specification

Security Principles

Defense in Depth: Multiple layers of security controls
Least Privilege: Components have minimal required permissions
Secure by Default: Safe configurations out of the box
Fail Secure: Errors result in secure states, not open vulnerabilities
Transparency: Security through openness, not obscurity

Threat Model

Network Layer

Sybil attacks on P2P network
Eclipse attacks on validators
DDoS against nodes and infrastructure

Consensus Layer

Byzantine validators (up to 33%)
Long-range attacks
Nothing-at-stake scenarios

Execution Layer

Smart contract vulnerabilities
MEV exploitation
Reentrancy and other EVM attack vectors

Cryptographic Layer

Quantum computing threats (addressed by post-quantum crypto LPs)
Key management vulnerabilities
Side-channel attacks

Security Practices

Code Security

Mandatory code review for all changes
Static analysis and fuzzing in CI/CD
Regular third-party audits

Operational Security

Hardware security modules for critical keys
Multi-signature requirements for sensitive operations
Incident response procedures

Disclosure Policy

Security vulnerabilities: [email protected]
Bug bounty program for responsible disclosure
Coordinated disclosure with 90-day timeline

Post-Quantum Readiness

Lux Network is preparing for the post-quantum era:

LP-311: ML-DSA digital signatures
LP-312: SLH-DSA hash-based signatures
LP-313: ML-KEM key encapsulation

Hybrid schemes allow gradual transition while maintaining current compatibility.

Rationale

Security frameworks must be explicit and documented to ensure consistent application across all development efforts. Ad-hoc security leads to gaps and inconsistencies.

Backwards Compatibility

This LP establishes policy and does not affect existing implementations.

Security Considerations

This document itself defines security considerations for the network. Regular review and updates are required as the threat landscape evolves.

Network Security Principles