Web3

Smart Contract Testing

Cross-Chain Bridge Security Testing: Preventing the $2B Problem

Cross-chain bridges have been the most catastrophically exploited category of smart contracts. Ronin Bridge ($625M), Wormhole ($320M), Nomad ($190M), Harmony Horizon ($100M) — a combined $2+ billion drained in 18 months. The bugs differ, but the pattern is consistent: insufficient validation of messages crossing chain boundaries. This guide covers how

Testing

Web3.js and ethers.js Integration Testing: DApp Backend Test Patterns

Integration testing for Web3 applications verifies that your application code correctly interacts with smart contracts under realistic conditions. Using ethers.js with a local Hardhat node gives you fast, deterministic tests with full control over blockchain state. Mainnet forking adds real protocol state when you need to test against live