Deep Solidity expertise combined with automated invariant testing — covering every EVM chain from Ethereum to L2s.
Our team includes a top Code4rena judge, the creator of EchidnaToFoundry, and engineers who've built and secured Solidity codebases handling hundreds of millions of dollars. We know Solidity's edge cases intimately — from storage layout quirks to ABI encoding pitfalls to compiler-version-specific behaviors.
Our audits and invariant test suites specifically target these Solidity vulnerability patterns.
| Vulnerability | Severity | How We Detect It |
|---|---|---|
| Reentrancy (cross-function, cross-contract) | Critical | Stateful fuzzing with callback simulation |
| Integer overflow/underflow | High | Arithmetic invariants tested across extreme values |
| Access control misconfigurations | Critical | Actor-based testing with unauthorized callers |
| Storage collision (proxies/upgrades) | High | Storage layout validation + upgrade testing |
| Unchecked return values | Medium | Manual review + pattern detection |
| Front-running / tx ordering | High | Random transaction ordering in fuzzer |
| Denial of service (gas griefing) | Medium | Gas-bounded invariant testing |
| Logic errors in state machines | High | State transition invariants with full coverage |
We audit Solidity contracts deployed on Ethereum mainnet, Arbitrum, Optimism, Base, Polygon, BSC, Avalanche, Fantom, Gnosis Chain, zkSync, Scroll, Linea, Blast, Mode, and any EVM-compatible chain. Our testing infrastructure supports mainnet forking for realistic state simulation.
We work with your existing development setup — Foundry, Hardhat, or custom configurations. Our Recon framework integrates with your build pipeline so the invariant test suite runs seamlessly alongside your existing tests.
We audit all Solidity versions from 0.4.x through the latest 0.8.x releases. Our tooling handles legacy codebases, including pre-SafeMath contracts, with specialized support.
Yes. We audit Solidity contracts on Ethereum, Arbitrum, Optimism, Base, Polygon, BSC, Avalanche, and any EVM-compatible chain. We can fork any chain's state for testing.
Yes. Our researchers have deep EVM-level expertise and regularly audit contracts with inline assembly, Yul blocks, and custom precompile interactions.
Yes. We work with both Foundry and Hardhat setups, as well as custom build configurations. Our invariant test suites are delivered in the framework your team already uses.
Send us your codebase for a quote within 48 hours.
Send Audit RequestThorough manual review combined with invariant testing — the most rigorous approach to smart contract security available today.
DeFi-native security researchers who understand composability risks, economic attacks, and protocol-specific vulnerability patterns.
We write the invariant tests that catch the bugs your manual audit missed — then hand you a test suite you can run forever.
Cloud-powered fuzzing infrastructure that runs Echidna, Medusa, Halmos, and Foundry — 12,500+ campaigns and counting.