solidity-security

Prevent reentrancy in Solidity smart contracts by strictly following the Checks-Effects-Interactions pattern, ensuring state changes occur before external calls, and implementing proper access control mechanisms.

When auditing DeFi protocols, apply security patterns like pull over push for payments, input validation, emergency stop mechanisms, and safe external calls to identify and remediate vulnerabilities.

Yes, you can use this guidance to secure existing token systems and dApps by applying threat modeling, proper access control, and guardrail-aware defense mechanisms against common attack vectors like front-running.

The best way to handle integer overflow and underflow in Solidity is by applying established security best practices, which include using safe math operations and proper input validation during smart contract development.

The order of operations matters for smart contract security because violating the Checks-Effects-Interactions pattern allows external calls to re-enter the contract before state variables are updated, creating severe reentrancy vulnerabilities.