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    • Assurance

      Smart Contract Assessment

      Securing code integrity, protecting digital assets

      Blockchain Layer 1 Assessment

      Assessing protocols, securing blockchain foundations

      Code Security Audit

      Uncovering flaws, strengthening software integrity

      Web Application Penetration Testing

      Exposing weaknesses, fortifying digital defenses

      Cloud Infrastructure Penetration Testing

      Securing configurations, protecting critical environments

      Red Team Exercise

      Simulating real-world attacks, strengthening defenses

      AI Red Teaming

      Testing AI systems against real threats

      AI Security Assessment

      Securing AI models, data, and pipelines

    • Advisory

      AI Advisory

      Guiding secure, strategic AI adoption forward

      Risk Assessment

      From unknown threats to actionable insights

      Blockchain Architecture Assessment

      Optimizing architecture for tomorrow’s networks

      Compliance Readiness

      Stay ready as regulations evolve

      Custody and Key Management Assessment

      Securing the heart of digital custody

      Technical Due Diligence

      See the risks before you invest

      Technical Training

      Empower your teams to secure what matters

    • Who We Are

      The best security engineers in the world

      Careers

      Work with the elite

      Who Trusts Us

      The trusted security advisor for blockchain and financial services industries

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      Service Commitments

      Committed to Protecting Your Data

    • Audits

      In-depth evaluations of smart contracts and blockchain infrastructures

      BVSS

      Blockchain Vulnerability Scoring System

      Disclosures

      All the latest vulnerabilities discovered by Halborn

      Case Studies

      How Halborn’s solutions have empowered clients to overcome security issues

      Reports

      Comprehensive reports and data

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ADVISORY SERVICES

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//

Elite Security Solutions for Financial Services and Blockchain

Halborn is the industry-leading blockchain solutions firm for enterprise-grade digital assets, trusted by the top financial institutions and blockchain ecosystem leaders. Experience world-class, end-to-end security, from smart contract auditing and pen testing to advisory services and beyond.

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Solutions

SECURITY ASSURANCE SERVICES

Smart Contract Assessment

Blockchain Layer 1 Assessment

Code Security Audit

Web Application Penetration Testing

Cloud Infrastructure Penetration Testing

Red Team Exercise

AI Red Teaming

AI Security Assessment

DLT ADVISORY SERVICES

AI Advisory

Risk Assessment

Blockchain Architecture Assessment

Compliance Readiness

Custody and Key Management Assessment

Technical Due Diligence

Technical Training

Customer Reviews

Trusted by

Featured In

Fortune
Tech Crunch
CNBC
CoinDesk
Yahoo! Finance
Forbes
Blockworks
The New York Times
Fintech TV
CoinTelegraph
Bloomberg
AP Associatied Press
Be In Crypto
Decrypt
Explained: Hacks

Explained: The Balancer Hack (November 2025)

11.05.2025

Month in Review

Month in Review: Top DeFi Hacks of October 2025

11.03.2025

Digital Assets

Securing Digital Asset Custody in Web3

10.30.2025

Digital Assets

How Weak Governance Impacts Stablecoin Security

10.28.2025

Kenny Lei, Engineering Manager

Ripple

Ripple

Halborn brought immediate value from day one, rapidly understood the XRP Ledger architecture, and delivered clear, actionable insights that strengthened the security of our new features.

Siggi Óskarsson, CTO

BSV Association

BSV Association

The thing that stood out for me was a very big click about the mentality and the way to approach the projects. Being very agile and open and collaborative, and looking at this as a partnership. I think that was the biggest selling point for me. It’s not like we are doing this SOW for three months and then after the three months we will evaluate, no, we are doing that each week and talking about it continuously and steering in a different direction if necessary halfway through the project. That flexibility and agility was the key for me.

James Poole, Founding Contributor

Renzo

Renzo

Halborn has been a tremendous resource on the security side as Renzo has evolved from a simple initial protocol to a multi-chain ecosystem. They have been a true partner with our product and users being the ultimate beneficiary of their hard work and dedication.

Shaun Martinak, Researcher, Portfolio Manager

Coinbase Asset Management

Coinbase Asset Management

As we searched for security partners, Halborn quickly rose to the top of that list because of their experience working across a range of technology stacks and having the deep experience to be able to integrate decentralized networks, cryptographic computing into that broader vision, and to help us test all aspects of it.

Anthony Rose, Head of Engineering

Matter Labs

Matter Labs

The experience working with Halborn was great, it was the first deep external review of our proof system. So even though we had done everything that we could internally to catch and harden the system before we bring it to an auditor, this is valuable and fruitful because you can find things that we had missed.

Brendon Sedo, Contributor

Core DAO

Core DAO

Our strategy on security is to get to work with the best partners—you being one of them, as Halborn has a great reputation and do a lot of diligence with these partners. We took a lot of time to make sure that everything was built right because we take security really seriously.

Brandon Truong, Head of Product

Zetachain

Zetachain

With audits there's real work, and it's represented by the reputation Halborn has. And from some of the people we had talked to, who have worked with you before, it seemed like a perfect fit because you aren't just specialized on smart contracts. I think it really helped in making a decision to work with Halborn: a comprehensive partner we can work with even beyond Mainnet.

Robert Bryan, Founder

Karate Combat

Karate Combat

We thought you were so much better, technically, than the other firms. But just looking at your general processes and the amount of time you are spending versus the other offerings out there, we thought it made a lot of sense because it's very important: we have a very valuable asset that is now going into this structure, and we want to make sure it's entirely secure.

Ryker, CEO

ZeroLend

ZeroLend

Partnering with Halborn significantly enhanced our security posture and provided peace of mind. Their meticulous code reviews and proactive support were instrumental in safeguarding our platform. We highly recommend Halborn for their expertise and dedication.

John Wu, President

AVA Labs

AVA Labs

What sets Halborn apart is its extensive knowledge of best security practices inside and outside of the blockchain industry. With the pen test report on the Avalanche Wallet, Halborn led with the highest level of professionalism and extreme care with every last detail.

Michael Steuer, Co-Founder & CTO

MAKE

MAKE

Halborn has a tremendous reputation and track record. We had heard from other projects that we are close with about the great experience they had with Halborn. So, after learning more about Halborn's approach to auditing, it was really a done deal.

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Trusted by

Solana
Circle
Coinbase Asset Management
Grayscale
LayerZero
zkSync
Uniswap
Magic Eden
Core
AMINA Bank
Yuga Labs
Berachain
dYdX
Animoca Brands
Avail
NFTfi
deBridge
Zetachain
Noble
IO.NET
Proof of Play
Axelar
Injective
Matter Labs
Horizen Labs
Renzo

// Case Study

HARDENING INFRASTRUCTURE FOR A B2B CRYPTO CUSTODY PROVIDER

Client: B2B Crypto Custody Provider

Case Study: Hardening Infrastructure for a B2B Crypto Custody Provider

Read about how Halborn secured the infrastructure for a B2B crypto custody provider.

Read the full story

// Case Study

SECURING CUSTODY ARCHITECTURE FOR A GLOBAL ASSET MANAGER

Client: A top-tier global asset manager

Case Study: Securing Custody Architecture for a Global Asset Manager

Read about how Halborn secured the custody architecture for a global asset manager.

Read the full story

// Case Study

SCALING A G-SIB'S CUSTODY PLATFORM THROUGH SECURE BY DESIGN ENGAGEMENT

Client: A global systemically important financial bank (G-SIB)

Case Study: Scaling a G-SIB's Custody Platform Through Secure by Design Engagement

Read about Halborn's partnership with a global systemically important financial bank (G-SIB).

Read the full story

// Case Study

ADVISING A MAJOR U.S.-BASED GLOBAL BANKING GROUP ON DIGITAL ASSET INFRASTRUCTURE

Client: Major U.S.-Based Global Banking Group

Case Study: Advising a Major U.S.-Based Global Banking Group on Digital Asset Infrastructure

Read about Halborn’s partnership with a major U.S.-based banking group.

Read the full story

// Case Study

SUPPORTING A LARGE SETTLEMENT AND CLEARING HOUSE WITH SECURE BY DESIGN ARCHITECTURE

Client: Large Settlement and Clearing House

Case Study: Supporting a Large Settlement and Clearing House with Secure by Design Architecture

Read about Halborn's secure-by-design approach with a large settlement and clearing house.

Read the full story