Implement the Checks‑Effects‑Interactions pattern in Solidity to stop reentrancy attacks. A step‑by‑step example, verification steps with Hardhat and Slither, and a discussion of trade‑offs and limitations.

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reentrancy

solidity smart-contract-security

Community & Careers

Article1 reply1 comment3,611 followingPosted 29 Jul 2025, 19:42 UTC85.8K views1,530 votes

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Deciding Where Vyper's @nonreentrant Lock Belongs in a Contract That Moves Funds

An architecture note on where Vyper's @nonreentrant lock belongs: which functions need it, why checks-effects-interactions is still required, and how to verify the lock with a hostile receiver contract.

Community & Careers · Guide

reentrancy

vyper smart-contract-security