Smart Contract security
Understand common smart contract vulnerabilities, security best practices, and how to write secure smart contracts.
75 min•By Priygop Team•Last updated: Feb 2026
Common Vulnerabilities
- Reentrancy: Multiple function calls before completion
- Integer Overflow/Underflow: Mathematical operation errors
- Access Control: Unauthorized function execution
- Front-running: Transaction ordering manipulation
- Denial of Service: Blocking contract functionality
security Best Practices
- Use established libraries like OpenZeppelin
- Implement proper access controls
- Test thoroughly with multiple scenarios
- Keep contracts simple and auditable
- Plan for upgradeability and emergency stops