Q
quub
🛡️ CRITICAL

Security Best Practices
Build Safe & Secure DeFi Apps

Essential security practices for building DeFi applications on Quub. Protect your users and their assets with these battle-tested guidelines.

Zero
Major Breaches
$5B+
Assets Protected
24/7
Security Monitoring
SOC 2
Certified

Critical Practices

Non-negotiable security practices you must implement

🔐

Smart Contract Security

CRITICAL
!
Audit All Contracts
Get professional security audits before mainnet deployment
!
Reentrancy Guards
Protect against reentrancy attacks with proper guards
!
Access Control
Implement role-based access control for admin functions
!
Integer Overflow
Use SafeMath or Solidity 0.8+ for overflow protection
🔑

Key Management

CRITICAL
!
Never Store Private Keys
Never store private keys in code, databases, or client-side
!
Use Hardware Wallets
Store admin keys in hardware wallets, not hot wallets
!
Multi-Signature Wallets
Require multiple signatures for critical operations
!
Rotate API Keys
Regularly rotate API keys and credentials
🌐

API Security

HIGH
•
Rate Limiting
Implement rate limiting to prevent abuse
•
HTTPS Only
Always use HTTPS, never HTTP for API calls
•
Input Validation
Validate and sanitize all user inputs
•
Authentication
Use secure authentication methods (JWT, OAuth)
🖥️

Frontend Security

HIGH
•
XSS Prevention
Sanitize user inputs to prevent XSS attacks
•
CSRF Protection
Implement CSRF tokens for state-changing operations
•
Content Security Policy
Set strict CSP headers to prevent injection
•
Secure Dependencies
Audit and update npm packages regularly

Common Vulnerabilities

Learn about common security vulnerabilities and how to prevent them

⚠️

Reentrancy Attacks

Attackers exploit recursive calls to drain funds. Use Checks-Effects-Interactions pattern and reentrancy guards.

Historic Loss: $60M+
🔢

Integer Overflow

Arithmetic operations exceed maximum values. Use SafeMath library or Solidity 0.8+ which has built-in checks.

Historic Loss: $100M+
🎣

Phishing Attacks

Users tricked into signing malicious transactions. Implement clear transaction previews and warnings.

Historic Loss: $500M+
🔓

Access Control

Unauthorized access to privileged functions. Implement proper role-based access control and modifiers.

Historic Loss: $200M+
💸

Flash Loan Attacks

Manipulate price oracles with flash loans. Use time-weighted average prices and multiple oracles.

Historic Loss: $300M+
🎭

Front-Running

Miners/bots exploit transaction ordering. Implement commit-reveal schemes or use private mempools.

Historic Loss: $50M+

Pre-Launch Checklist

Complete this checklist before deploying to mainnet

📄 Smart Contracts

Professional security audit completed
All audit issues resolved
100% test coverage achieved
Tested on testnet for 2+ weeks
Emergency pause mechanism implemented
Timelock for admin functions

🔑 Access & Keys

Multi-sig wallet for admin keys
Hardware wallets for key storage
API keys secured in environment variables
No private keys in code or repos
Key rotation policy in place
Backup and recovery procedures tested

🏗️ Infrastructure

Rate limiting configured
DDoS protection enabled
SSL/TLS certificates valid
WAF (Web Application Firewall) active
Monitoring and alerting configured
Incident response plan documented

🖥️ Frontend

All inputs sanitized
CSP headers configured
Dependencies audited (npm audit)
Transaction confirmations clear
Phishing warnings implemented
Error messages don't leak info

Recommended Tools

Essential security tools for DeFi development

🔍

Slither

Static analysis framework for Solidity. Detects vulnerabilities and suggests optimizations.

🧪

Echidna

Fuzzing tool for Ethereum smart contracts. Finds edge cases and unexpected behaviors.

🛡️

MythX

Cloud-based security analysis platform. Comprehensive vulnerability detection.

📊

Tenderly

Real-time monitoring and alerting. Debug transactions and simulate scenarios.

🔐

OpenZeppelin

Battle-tested smart contract libraries. Secure, audited implementations of standards.

🚨

Forta Network

Real-time threat detection. Monitor your contracts 24/7 for suspicious activity.

Security First, Always

Follow these best practices to protect your users and build secure DeFi applications. Need help? Our security team is here to assist.

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