solidity-security

Master smart contract security best practices to prevent reentrancy, overflow, and access control issues.

• Master smart contract security best practices
• Prevent common vulnerabilities like reentrancy and overflow
• Implement secure Solidity patterns and access control
• Use checks-effects-interactions pattern

• Critical: Prevent reentrancy with checks-effects-interactions
• MUST use Checks-Effects-Interactions pattern
• FORBIDDEN: External calls before state updates
• MUST validate access control before state changes
• MUST use built-in overflow checks (Solidity >=0.8.0)
• MUST implement role-based or ownership control
• MUST mitigate front-running with commitment/reveal
• MUST avoid unsafe math operations

1. 1.Identify vulnerable patterns in code
2. 2.Apply checks-effects-interactions pattern
3. 3.Use ReentrancyGuard or access control for permissions
4. 4.Validate state before external calls
5. 5.Use SafeMath or modern Solidity for math operations
6. 6.Implement commitment/reveal for front-running mitigation