We provide comprehensive smart contract security reviews. Manual code analysis, automated testing, and vulnerability assessment for protocols that need to launch with confidence.
Smart contract auditing is not just about finding bugs — it is about understanding the intent of the code and verifying that the implementation matches the specification. The most dangerous vulnerabilities are not simple coding errors; they are logic flaws where the contract behaves exactly as written but not as intended. Arthiq's security reviews are conducted by engineers who build production smart contracts, giving us the context to identify these subtle issues.
Our auditing practice covers Solidity contracts on EVM chains, Rust programs on Solana, and Move modules on Aptos and Sui. We review DeFi protocols, NFT platforms, DAO governance systems, token contracts, and custom on-chain applications. Each review is conducted by engineers with hands-on experience building the type of system being audited.
We combine manual code review — line-by-line analysis by experienced engineers — with automated tooling including static analysis, fuzz testing, and formal verification where applicable. This multi-layered approach catches both common vulnerability patterns and application-specific logic flaws that automated tools alone would miss.
Every audit begins with a specification review. We study the project documentation, architecture diagrams, and economic models to understand what the contracts should do. This context is essential for identifying logic vulnerabilities where code works correctly but produces unintended outcomes.
The manual review phase examines every function, state transition, and access control check. We trace the flow of value through the system, identify all external interactions, verify arithmetic operations for overflow and precision issues, and assess the security of upgrade mechanisms. We maintain a checklist of over 50 common vulnerability categories specific to each contract type.
Automated analysis runs in parallel with manual review. We use Slither for static analysis, Mythril for symbolic execution, and Foundry for fuzz testing and invariant verification. Custom property-based tests are written for protocol-specific invariants — for example, verifying that total shares always correspond to total assets in a vault contract.
We classify findings by severity — critical, high, medium, low, and informational — with each finding including a detailed description, proof of concept, and recommended fix. Critical and high findings represent immediate security risks that must be addressed before deployment. Medium and low findings identify potential issues that should be evaluated against the project's risk tolerance.
Our reports include architecture-level observations that may not be individual vulnerabilities but represent design patterns that could create issues as the protocol evolves. These recommendations help teams build more maintainable and secure systems over the long term.
We also provide a post-fix verification round where we review the team's remediation of identified issues. This ensures that fixes are correctly implemented and do not introduce new vulnerabilities. The final report reflects the state of the code after remediation, giving stakeholders clear confidence in the deployed version.
Many teams need help getting their codebase ready for a formal audit. We provide audit preparation services that include code cleanup, documentation improvement, test coverage expansion, and preliminary security review. This preparation reduces the number of findings in the formal audit and makes the process faster and more cost-effective.
Our preparation work includes writing comprehensive natspec documentation, ensuring consistent code formatting, adding missing unit tests, implementing standard security patterns, and conducting an initial vulnerability assessment. We also prepare specification documents that auditors need to understand the intended behavior of each contract.
For teams planning to use an external audit firm, our preparation services significantly improve the audit experience. Auditors can focus on deep analysis rather than basic issues, the audit timeline is shorter because the codebase is well-organized, and the final report reflects a more mature security posture.
Security does not end with a single audit. We provide ongoing security advisory services that include review of contract upgrades, assessment of new integrations, monitoring for emerging vulnerability patterns, and incident response support. As your protocol evolves, our security team ensures that changes maintain the security standards established in the initial review.
We also help teams establish internal security practices — code review guidelines, testing requirements, deployment checklists, and monitoring procedures that reduce the risk of introducing vulnerabilities during ongoing development.
Arthiq's security practice operates from Singapore and serves protocols worldwide. Whether you need a pre-launch audit, audit preparation support, or ongoing security advisory, we provide the expertise to protect your protocol and your users. Contact founders@arthiq.co to schedule a security engagement.
Our security engineers review contracts across Solidity, Rust, and Move. Launch with confidence knowing your code has been thoroughly examined.