Cybersecurity and Blockchain Security Specialists
HYDN provides Penetration Testing, Smart Contract Audits, and Red Team Exercises that uncover what others miss.
- $10B+
- Funds secured
- 100+
- Clients served
- 30+
- Chains monitored in real time
Trusted by industry leaders including:
Tested in public, against real money
Security firms are easy to evaluate on their marketing and hard to evaluate on their work. These are engagements where ours was visible.
In April 2023 our monitoring caught an approval bug in SushiSwap's RouteProcessor2 contract. We opened a war room with the Sushi team that night and deployed a cross chain watcher to front run the attackers across eight chains, recovering funds that were already being drained.
Read the SushiSwap write upCTF champions
Winners of the EthernautDAO CTF in 2022, breaking the target contracts twice in under five minutes. Our lead auditor placed as the highest solo competitor in the Paradigm CTF 2023.
Read the reportWe track the people attacking you
Our team has over 40 years of combined experience countering advanced persistent threat groups including Lazarus Group, Kasablanka Group and MuddyWater.
Inside Lazarus Group's war on DeFiOur Expertise
HYDN is a cybersecurity focused on both traditional web2 and web3 security. Our team is hugely experienced across a number of verticals and comes from the likes of Cisco, IBM X-Force, Alert Logic, NYSE, and more. HYDN's customer base stretches from small to multi billion dollar organizations around the globe.
Cybersecurity
HYDN bring over 40 years combined cybersecurity experience to the table and offer services including Adversarial Simulation, Red Teaming, Incident Response, Malware Triage, Digital Forensics, Network Monitoring & Alerting, and Secure Network Design.
Blockchain
HYDN offer industry leading Smart Contract Audits and Web3 Penetration Testing for EVM compatible blockchains. Alongside this, HYDN also offer Consulting, Concept, Business Modelling, Validation, and Technical Design for blockchain projects.
AI Security
HYDN builds security and automation tooling for an AI-first world. We partnered with the UK Government's Artificial Intelligence Collaboration Centre (AICC) and we've shipped AI-native products for LLM penetration testing, web app penetration testing, and smart contract auditing.
We still use human security experts for all client engagements.
HYDN protects high value digital assets against evolving threats, and keeps operations secure and trustworthy for organisations that cannot afford to get security wrong.
Featured Services
Smart Contract Audits
HYDN provide in-depth audits of projects smart contracts which evaluate for safety, functionality, protection, and utility. Clients are provided user-centric audits as well as contract functionality assessments.
Red Team and Adversarial Simulation
HYDN’s Red Team simulates internal attacks to identify and remediate vulnerabilities, and test, measure and improve your team's risk detection and incident response. HYDN have a specialization in APT Group tactics with decades of experience in the fight against Lazarus Group, Kasablanka, MuddyWater and more.
Penetration Testing
With HYDN's Pen Testing services you will discover how attackers could potentially exploit vulnerabilities with your business and get expert guidance on how to stop them.
AI Security and Observability
HYDN builds security, observation and automation tooling for an AI-first world. We've shipped AI-native products for LLM penetration testing, monitoring and observability, web app penetration testing, and smart contract auditing.
Which service do you need?
These are different services that find different problems. This guide is here so you buy the one that fits where you are, and not the one with the biggest name.
You are shipping contracts
You have written smart contracts and want them reviewed line by line before they hold real money. Findings classified critical to minor, with up to two rounds of remediation review included.
Smart Contract AuditsYou have a live system
Your product is running and you want to know what an attacker could take across contracts, APIs, wallets, front ends and infrastructure, beyond the code alone.
Penetration TestingYou already have defences
You have monitoring and a security team, and the real question is whether they would detect a determined adversary. Full spectrum simulation across technology, people and physical access.
Red Team and Adversarial SimulationYou are building with AI
You have models, agents or AI generated code in production and need the offensive testing, defensive controls and observability that conventional security tooling does not cover.
AI SecurityNot sure? Most protocols need an audit before launch and a penetration test once live. Tell us what you have built and we will tell you what is worth doing, including when the answer is nothing yet.