Tier 1 Smart Contract Audits

HYDN provide in-depth manual Smart Contract Audits from a team of blockchain security experts

Limited availability in Late June/July

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Trusted by leading projects including:

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Enterprise quality audits at affordable prices...

Manual Testing

Each contract is automatically tested to uncover any known or common exploits before we manually review each line of code.

The HYDN audit team has over 30 years experience in cybersecurity and blockchain including previous roles at NYSE, Cisco, BT, Alert Logic, and more.

Easy to Read Reports

HYDN provides user centric focused reports with clearly defined issues and remediation advice. Each audit includes up-to 3 remediation cycles. HYDN assigns the following impact rankings: Critical, High, Medium, Low, Informational.

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Recent Audits

Dancing Seahorse

HYDN recently worked with Web3 music NFT project Dancing Seahorse to perform a Smart Contract Audit of their full collection of NFTs. This included the Legendary drop which has raised over $23m in sales in just two weeks helping the brand to secure key partnerships with artists like Bad Bunny, Jack Harlow, Elton John, and more.


HYDN performed a smart contract audit for Swapsicle's new IceBox Staking protocol. This staking contract allows users to earn up to 30% APY when staking AVAX. HYDN are also currently carrying out further audits for Swapsicle which will be featured soon.


HYDN completed the smart contract audits for Sablier's recent contracts. Sablier allows people to make by the second payments with the Sablier asset streaming protocol. Powered by Ethereum smart contracts.

Security you can trust...

HYDN is an industry leading Smart Contract Audit firm which has extensive experience working with a multitude of blockchain projects to help them get the most out of their release.

We assist projects not only with Smart Contract Security but we can also provide marketing, tokenomics, and go-to-market strategy support.

HYDN's team are CISSP, CCNP, GCIH, GREM, and GNFA certified and have worked uncovering some of the biggest cybersecurity hacks in history including the 2018 Olympic Destroyer Hack.

HYDN was the winners of the recent EthernautDAO CTF Hacking Challenge 2022 hacking the smart contracts twice in under 5 minutes.

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HYDN vs Other Auditors

Why you should choose HYDN if you're serious about security...

Most audit companies don't take the time to get a proper understanding of what you are trying to achieve, they simply operate on high volumes with rapid, often automated, delivery.

Here at HYDN we first gather a deep understanding of what your project is trying to achieve and then we can ideate potential attack vectors and test them properly.

By operating this way, HYDN is able to truly test your code for vulnerabilities.

Lite plan


  • Detailed manual audits that uncover more vulnerabilities
  • Deep understanding of your project to run proper vulnerability checks
  • Hands on personal service

Pro plan

Other Auditors

  • Rely heavily on automated tools
  • No consideration of project goals so only test for general attack vectors
  • Poor quality service

Why Choose HYDN?

Experienced security experts

HYDN's team has over 30 years worth of cybersecurity and blockchain technology experience including previous roles at NYSE, Cisco, BT, Alert Logic, and more.

Comprehensive manual auditing

Security is key and that is why HYDN take a methodical approach to auditing where things are done methodically to ensure best in class results.

On a mission to secure the blockchain

HYDN is on a mission to ensure the blockchain supports secure business operations for all. As part of this mission, our team are testing protocols 24 hours a day, 7 days a week, 365 days a year.

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What our customers say

Above and beyond

“We’ve done multiple smart contract audits with HYDN and they’ve always gone above and beyond our expectations. They take the time to understand your project and have helped us improve our security”

Jose S

Dancing Seahorse

"The HYDN team has been phenomenal to work with, from communicating with our team to asses our needs, to delivering on time a very detailed and helpful audit, we are very happy to have our project audited by them"

Pedro R


"HYDN identified a complex vulnerability that had the potential to devastate our platform. They offered insightful counter measures, and responded promptly to our queries. We view HYDN as a invaluable partner in our success."


 Nau Finance
Previous HYDN team experience includes
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Don't wait until it's too late...

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Experienced Team

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Comprehensive Reports

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Affordable Pricing