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Docs/Security Guide/Best Practices/Solidity Security Tips

Solidity Security Tips

Write secure Solidity smart contracts. This guide covers Solidity-specific security patterns and best practices to prevent common vulnerabilities. --- solidity...

Last updated: March 16, 2026
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OverviewCompiler SettingsUse Latest Stable VersionOptimizer SettingsAccess ControlUse OpenZeppelinTwo-Step Ownership TransferReentrancy ProtectionUse ReentrancyGuardChecks-Effects-Interactions PatternSafe External CallsSafeERC20 for Token TransfersCheck Low-Level Call ResultsInput ValidationValidate All ParametersUse Custom Errors (Gas Efficient)Arithmetic SafetySolidity 0.8+ Built-in ProtectionDivision PrecisionStorage PatternsInitialize ProperlyUse Immutable for ConstantsEvent EmissionLog All State ChangesUse Indexed ParametersGas Optimization Without Sacrificing SecuritySafe OptimizationsAvoid Unsafe OptimizationsCommon Pitfallstx.origin vs msg.senderDelegatecall DangersApprove Race ConditionTesting RecommendationsTest Security PropertiesNext Steps
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