Smart Contract Audit Experts

HYDN provides a hands on, detailed service that first gathers a deep understanding of how your project works so we can fully test for vulnerabilities and real-world attacks.

By doing this our team is able find more bugs and issues than competitors who purely assess code without considering business goals - giving you peace-of mind as well as greater efficiency.

- Detailed manual smart contract audits
- Hands on personal service
- We find more vulnerabilities than competitors

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Trusted by leading projects including:

spookyswap logoBlueZilla launchpad logoCrossWallet web3 wallet logoSwapsicle dex logo
position exchange logodancing seahorse in line logonau finance logoOCTANE NFT LOGO

Enterprise quality audits at affordable prices...

Detailed Manual Testing

Before we start a Smart Contract Audit, our team gather as much information as possible from you about your business goals and how you want the contract to function.

Each contract is then automatically tested to uncover any known or common exploits before we manually review each line of code and test for real-world vulnerabilities that could occur.

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

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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 the upcoming NFT release by world-renowned automotive artist, Manu Campa. Octane will be the first NFT release by Campa, who has worked with the likes of Coca Cola, Porsche, Mini, and recently featured on the new Gran Turismo game.

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. HYDN have performed smart contract security services for the likes of SpookySwap, BlueZilla, Position Exchange, Dancing Seahorse, Manu Campa, Octane, CrossWallet, Nau Finance, and more.

Comprehensive manual auditing

Security is key and that is why HYDN take a methodical approach to auditing where things are done manually to ensure best in class results. Initially all contracts are run through our automated tools before our auditors go through the code line by line to uncover vulnerabilities.

Affordable Premium Audits

HYDN provide a premium smart contract audit service making use of both automated and detailed manual testing for every contract we audit. The price of an audit depends upon the size and complexity of the project.

As a general guide, HYDN audits start from $4999.

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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

Hands-on service

"We've worked with HYDN on multiple projects and they provide such a detailed, hands-on service. They've got a friendly team who are always available to answer questions and we've really enjoyed our work with them."

David N

McCann Dublin

Don't wait until it's too late...

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Experienced Team

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