Securing The Future

Web3 founders exist in constant fear of attacks: time is against you and hackers never sleep. We are here to put your fear to rest. Our expert team is prepared to take care of your project. Look no further, put your trust in HashEx!

  • Smart Contract Audit

    Security is the foundation of success. Ensure the safety of your venture.

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  • Corporate Clients

    Easy answer to your security headaches. Start building a safe future together.

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  • All-around Security

    Subscribe to HashEx Security Service and receive round-the-clock support.

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Our most popular audits

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HashEx works with the most well-known blockchain brands

Interested in learning more about security auditing with HashEx?

Our services

Security Audit

Comprehensive risk assessment from an expert team with 6+ years of experience in DeFi. Audits of a wide variety of smart contracts from tokens to NFTs.
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HashEx Academy

Education and certification for Solidity developers and auditors. A community of like-minded DeFi enthusiasts.
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Smart Contracts Development

Our team of professional developers will write and test a smart contract of your choosing. We work with various standards: ERC-20, RFI, NFT, and on most popular blockchains.
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Media about us

  • Forbes logo

    How To Value Your Smart Contract…And Your Auditor

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  • beincrypto logo

    Crypto Project Security: A Guide to Early Threat Detection

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  • Hackernoon logo

    Security for Decentralized Projects with Timelocks

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  • beincrypto logo

    AI for Smart Contract Audits: Quick Solution or Risky Business?

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  • hackernoon logo

    Trader Joe’s Case Analysis: Why Multi-Auditing of DeFi Projects is Important

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  • cointelegraph logo

    Critical $20M SafeMoon vulnerability? Project devs say no cause for alarm

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  • coinspeaker logo

    How to Reduce Number of Risks During Fork?

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  • Read more articles
  • I couldn't have more respect for the HashEx team. ApeSwap partnered with them early on and they have been an absolute pleasure to work with. I always recommend HashEx to all ApeSwap Jungle family members because HashEx actually cares about your project and your code. They will work with you to improve it and will do it at a very reasonable rate. Other popular audit firms just want your money, HashEx wants you to be SAFU. If you are looking for an audit partner, this is the place to go!

  • HashEx has exceeded our expectations in every aspect. Undoubtedly, the team is highly professional. What surprised us is their strong emphasis on details. Whether it is the core function or the interactive experience, HashEx has made very detailed optimization suggestions. This makes us feel that the team is not merely doing a job, but is treating it as if it’s their own project and takes full responsibility for it.

Leadership team



    СЕО, Founder




  • GLEB ZYKOV CTO, Cofounder


    CTO, Cofounder

  • OLGA ORTEGA Sr. Product Manager


    Sr. Product Manager

  • ALEXEY BELOZERTSEV Lead Frontend & Backend, Cofounder


    Lead Frontend & Backend, Cofounder

Do you want to join the HashEx Team?

Frequently Asked Questions

  • Smart contract audits

      What is the process of a smart contract audit?

      After the client contacts HashEx, the company reviews the code and estimates the price. Then the smart contract 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: 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 5 years of experience in DeFi security and has performed over 1000 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.
  • Development

      What types of contracts does HashEx develop?

      HashEx works with the most well-known types of smart contracts, primarily on Solidity and Rust languages. For inquiries on development in other languages, please contact the team. Among successfully developed contracts there are fungible token contracts, NFT contracts, DAOs and Farms, Staking and Vesting contracts, and many others.

      What is the development process?

      After the client approaches HashEx, we develop a vision of what the contract has to represent. We determine the type and language, the goals, and specific details. Then we develop the contract and test it. After that step, the client receives the finished product.

      What else does HashEx Develop?

      Aside from smart contracts, HashEx specialists develop simple and sophisticated dApp solutions, that include smart contracts as well as front-end and back-end.
  • Testing

      How does HashEx test smart contracts?

      As a part of the development process, HashEx always writes unit tests aiming to achieve 100% coverage. While developing back-end and front-end of a DApp, HashEx developers employ special automated testing scripts and manual testing by an experienced team. HashEx also provides fuzzing services upon request.

      What testing tools does HashEx use?

      HashEx tests smart contracts using several tools. Mostly, the developer team uses Hardhat, within which they apply a stack of ethers.js, waffle, and mocha. If further issues present themselves, and additional testing is required, other tools may be involved. If it’s imperative to test a contract, considering the real network data, the team does so using a mainnet fork. For Fuzzing HashEx testers use Echidna.
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