What
they say
about us

Chain Security's team showed a high level of professionalism in the essential/engineering area and communication. They were helpful and open for dialogue while providing expertise and recommendations. Oasis.app must be a product our users can trust. We look forward to continuing our work with Chain Security to assure this trust.

I would like to thank CS for their diligent work on StarkNet version of DAI. Their input greatly helped us improve our codebase. Looking forward to working with them in the future!

Chainsecurity managed to rapidly understand and analyze a code that has been partially forked. They understood in an impressively low amount of time why Angle made changes and how these changes could impact the whole system! Once again, we thank them for their flexibility and rigor!

We’re very thankful for the opportunity to collaborate with ChainSecurity on their security audit of the Threshold Network, the new network formed by the merger of NuCypher and Keep. The staking contracts in Threshold are complex: needing to account for T, NU, and KEEP stakers on one hand and multiple services (proxy re-encryption, tBTC, the random beacon, and more) on the other. ChainSecurity developed a holistic understanding of the system and its key parts, delivering an actionable review and suggestions that directly benefited and improved the contracts being reviewed.

The audit process was so much more pleasant and constructive than I imagined - I expected something much more clinical to be honest!

Chainsecurity did not only run a thorough static analysis of our code like a normal auditor would do, but they also made the effort to understand the Angle protocol as a whole, helping us make our code safer and our protocol more efficient! They were the perfect partner for us building a highly complex system!

We keep coming back to Chain Security for our protocol and contract audits! Their team is top-notch, delivering comprehensive reviews, fast turnaround, and collaboration from start to finish to ensure our code is of the highest quality and as secure as possible.

The entire HOPR team is once again grateful for the highly professional audit by ChainSecurity. Our payment channel and proof-of-relay mechanism is an intricate design that was rapidly understood and evaluated by their auditors, who then delivered an excellent review to help the HOPR community keeping funds in the HOPR payment channels SAFU.

The ChainSecurity team went the extra mile to ensure the HOPR token and distributor contracts are secure. They even identified and resolved a complex issue in the ERC777 implementation by OpenZeppelin that's used by many projects in the space.

ChainSecurity has a thoughtful and thorough approach to their auditing process, which is not always the case with security auditing firms. Communication was excellent throughout; their high level of scrutiny, attention to detail, and understanding of complexities helped improve our OmniBridge contracts.

With their thorough and high quality audits, ChainSecurity has been one of Kyber Network’s primary auditors for years now. We look forward to continuing our partnership with them for many more years to come as we keep growing the frontiers of blockchain.

ChainSecurity went above and beyond our expectations when it came to the audit of our Liquidations 2.0 upgrade of the MakerDAO Protocol. They were the perfect partner to support the biggest upgrade of the protocol since its launch.

When we were evaluating auditors for the Polkadot Claims Contract, the team at ChainSecurity Ltd impressed us with their track record of successful audits and their tooling for verifying properties of smart contracts. For the audit, they were able to functionally verify twelve properties of our smart contract to ensure the immutability of critical state that is needed to bootstrap Polkadot genesis. They helped to identify design, trust, and security concerns in the contract and we were able to work together to resolve each of these. If we have further opportunities for our security needs, we would consider engaging ChainSecurity Ltd again.

ChainSecurity Ltd provided an expert analysis and audit on each of the iExec V3 smart contracts (mainly the iexecHub and iexecClerk contracts). After an extensive review of thousands of lines of code, ChainSecurity Ltd produced a detailed report which is public and open for everyone to read. The iExec team would like to thank ChainSecurity Ltd for such a rigorous and detailed report!

We are extremely pleased with our choice. All the security auditors were great to work with and their services were professionally conducted. I would recommend ChainSecurity Ltd to anyone looking for top notch secure solutions for blockchains and smart contracts.

We were attracted by the fact that they span out from the security lab at ETH Zurich (Switzerland's answer to MIT). We kept coming back and continue referring them to others for their professionalism and commitment.