Automated Smart Contract Security Testing with Slither, Echidna, and Foundry
You have just deployed a Solidity contract that passed all your unit tests. Two weeks later, $3.4 million is drained through a reentrancy attack your test suite never even considered. This is not a hypothetical. Smart contract exploits have resulted in over $15 billion in cumulative losses since 2020, with $2.8 billion stolen from cross-chain bridges alone in 2024. The gap between “my tests pass” and “this contract is secure” is enormous, and traditional testing approaches will not bridge it. What will is a three-layer automated security pipeline: static analysis to catch known vulnerability patterns, fuzzing to explore untested state spaces, and invariant testing to verify your core business logic under adversarial conditions. ...