Solidity Audit — Smart Contract Security for Every EVM Chain
Deep Solidity audit expertise combined with automated invariant testing — covering every EVM chain from Ethereum to L2s.
Why Choose Recon for Your Solidity Audit
Every Solidity audit from Recon pairs experienced security researchers with invariant test suites. 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.
Common Solidity Vulnerability Types
A thorough Solidity audit must cover these vulnerability patterns — our invariant test suites specifically target each one.
| 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 |
EVM Chains Supported
Our Solidity audit service covers 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.
Tooling Integration
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.
Frequently Asked Questions
Which Solidity versions do you support?
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.
Do you audit across all EVM chains?
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.
Can you audit Solidity contracts that use inline assembly or Yul?
Yes. Our researchers have deep EVM-level expertise and regularly audit contracts with inline assembly, Yul blocks, and custom precompile interactions.
Do you support Foundry and Hardhat projects?
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.
Start Your Solidity Audit Today
Send us your codebase for a quote within 48 hours.
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