Blockchain & Smart Contract Audit

A smart contract audit reviews your contracts before they hold real value. Once deployed, smart contracts are hard or impossible to change, and a single bug can lead to an irreversible loss of funds. Our auditors manually review your code and test it against known and novel attack techniques.

What We Review

• Reentrancy and unsafe external calls.
• Access control: owner and admin functions, upgradeability and proxy patterns.
• Business logic flaws in token, DeFi, NFT and staking contracts.
• Economic attacks: price oracle manipulation, flash loans and front-running.
• Arithmetic, input validation and gas-related denial of service.
• Supporting dApp, APIs and wallets on request.

Our Approach

We combine line-by-line manual review with static analysis and targeted testing on a forked or test network. Each finding is verified and explained with its real-world impact, so your developers understand both the risk and the fix.

What You Get

• A detailed audit report with severity ratings and proof of concept.
• Clear remediation recommendations for every issue.
• A re-audit of your fixes and an updated report.
• A summary you can share with your community and investors.

Why Offensium Vault

• Manual, security-researcher-led review, not automated output alone.
• Focus on business logic, where the costliest exploits occur.
• ISO 27001 and ISO 9001 certified processes with strict confidentiality.

For the web front end and APIs of your dApp, see web application penetration testing and API security testing.

Frequently Asked Questions

Which blockchains do you support?

We focus on Solidity and EVM-compatible chains such as Ethereum, Polygon, BNB Chain, Arbitrum and Base. Contact us for other platforms.

How long does an audit take?

It depends on code size and complexity. Most audits take one to three weeks, confirmed after we review your repository.

Do you re-audit after fixes?

Yes. We review your fixes and issue an updated report.

Get a Quote

Tell us about your environment and timelines and we will send a clear, fixed-scope proposal. Contact Offensium Vault or book a free call with our team.