Blockchain security

ChainSecurity is led by security experts from the renowned university ETH Zurich. We are trusted by 85+ blockchain companies and established corporations with security audits and services.

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Hello again!

April 16th, 2021
We are thrilled to be back offering smart contract code reviews for the DeFi market under the established ChainSecurity brand. Our move from PwC enables our team to capture opportunities outside of the traditional regulated market with the flexibility needed to adapt and evolve for this emerging market. PwC and ChainSecurity continue to work together to help foster trust throughout the growing blockchain ecosystem.
For more about what we do, reach out to Emilie Raffo.

ChainSecurity is led by security experts from the renowned university ETH Zurich. We are trusted by 85+ blockchain companies and established corporations with security audits and services.

$17B+ secured

We have secured complex systems for top blockchain clients, such as decentralized finance (DeFi) projects, and multinational organizations, such as banks and industrial consortia.

What our customers say
We've worked with many Smart Contract auditors in the last five years and ChainSecurity quickly differentiated themselves as a leader in the space. They have relevant DeFi expertise, professional work ethic and have always been a reliable partner.
Mona El Isa (CEO)
What our customers say
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.
Loi Luu (CEO)
What our customers say
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.
Wouter Kampmann (Head of Engineering)
What our customers say
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.
Dr Sebastian Bürgel, HOPR Founder

Swiss Expertise

Our team consists of PhDs and graduates in blockchain security from ETH Zurich, Switzerland, #1 ranked university in Europe.

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Global Experience

Our team is led by former Big 4 professionals, with a global mindset and long-term business vision.

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From Our Blog
  • Jan 15, 2019

    Constantinople enables new Reentrancy Attack