DeFi: Smart Contracts and Security Audit

500+ smart contracts have been audited since 2017. Bring Trust into DeFi.

  • No Bugs

    Positive reputation built upon fixing problems

  • No Exploits

    A thorough audit allows to reduce the likeliness of fraud and loss of assets.

  • User Confidence

    A thorough audit allows to reduce the likeliness of fraud and loss of assets.

  • Brand Awareness

    After the audit is completed, we publish the report, which allows our subscribers to get acquainted with your project.

Audit process



Send us the specification of the code by e-mail



You get a quote and timeline



We start the audit



We privately send the report to your team



Your team fixes the issues



We examine your fixes, update and publish the report (optional)

We carry out different types of audit

  • DAO auditDAO audit

    Decentralized autonomous organizations serve as a platform for using blockchain. In this sense, the security of these platforms is vital for all users.
    Learn more
  • DApp auditDApp audit

    Decentralized applications run on blockchains and operate through smart contracts instead of being operated by people or organizations.
    Learn more
  • DEX auditDEX audit

    Decentralized crypto exchange platforms are peer-to-peer cryptocurrency swap platforms. Without any centralized regulation, the security of DEXs relies solely on the users and the smart contracts upon which the system works.
    Learn more

Our most popular audits

HashEx works with the most well-known blockchain brands

Frequently Asked Questions

  • Audits

      What is the process of an audit?

      After the client contacts HashEx, the company reviews the code and estimates the price. Then the audit is conducted and a preliminary report is formed. After that, the report is returned to the team and they review it and fix the issues. The final step is the final audit report that is published on HashEx social media.

      What types of contracts does HashEx audit?

      HashEx audits contracts of any difficulty: Contracts for the token Standards ERC20, ERC721, ERC1155 Aside from tokens, HashEx audits smart contracts for DAOs, staking, NFTs, DApps, DEXs, Farms (MasterChefs and others), Lending, marketplaces, auctions, games, bridges.

      What languages does HashEx audit?

      HashEx performs audits for Solidity and Rust languages. Requests for other audits can be discussed by contacting our team.

      What blockchains does HashEx work with?

      HashEx audits contracts for most blockchains that use Solidity and/or Rust languages: Ethereum, BSC, Solana, Avalanche, xDai, Near, Aurora, Terra.

      Does a passed audit mean that the project is safe?

      A finalized audit, unfortunately, does not guarantee project’s safety. Before investing it’s good to recheck the existing issues and vulnerabilities, presented in the audit report. It also helps if the project’s lp is locked, and the project’s team is known publicly or has passed a KYC by a tire one security company.

      How to read a HashEx audit report?

      HashEx report consists of several blocks: aside from disclaimer, HashEx reviews submitted contracts, outlining the main issues in each contract. Auditors state the issue and present a short description with the potential danger of said issue. Note that there is a table of contents, in this case, audited contracts. It’s important to make sure that all the contracts have indeed been audited and that a client didn’t add new ones that haven’t been reviewed.

      What separates a HashEx audit from any other one?

      HashEx team has a rich background in DeFi security. The company itself has over 4 years of experience in DeFi security and has performed over 500 audits. Our team of auditors has a vast library of known issues and thanks to manual reviews, they have the ability to find even minor errors. The reviews are performed first by an automated tool, then by two separate teams. This process is aimed at eliminating the possibility of missed vulnerabilities.

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