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    • Advisory

      AI Advisory

      Strategic guidance for secure AI adoption

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      Reviewing blockchain designs for security and resilience

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      Aligning controls to evolving regulatory mandates

      Custody and Key Management Assessment

      Securing digital asset custody and key systems

      Risk Assessment

      Clarity on your cybersecurity risk posture

      Technical Due Diligence

      Validating security before third-party commitments

      Technical Training

      Building blockchain and security skills enterprise-wide

    • Assurance

      AI Red Teaming

      Adversarial testing against real-world AI threats

      AI Security Assessment

      Identifying vulnerabilities in AI models and pipelines

      Blockchain Layer 1 Assessment

      Protocol-level security review of L1 networks

      Code Security Audit

      Uncovering vulnerabilities in your source code

      Web Application Penetration Testing

      Exposing exploitable flaws in web applications

      Cloud Infrastructure Penetration Testing

      Finding weaknesses across cloud environments

      Red Team Exercise

      Full-scope adversarial simulation of your defenses

      Smart Contract Assessment

      Code security testing for blockchain-powered applications and systems.

    • Who We Are

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      Who Trusts Us

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    • Audits

      In-depth evaluations of smart contracts and blockchain infrastructures

      BVSS

      Blockchain Vulnerability Scoring System

      Disclosures

      All the latest vulnerabilities discovered by Halborn

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© Halborn 2026. All rights reserved.

AI Advisory

Strategic guidance for secure AI adoption

Blockchain Architecture Assessment

Reviewing blockchain designs for security and resilience

Compliance Readiness

Aligning controls to evolving regulatory mandates

Custody and Key Management Assessment

Securing digital asset custody and key systems

Risk Assessment

Clarity on your cybersecurity risk posture

Technical Due Diligence

Validating security before third-party commitments

Technical Training

Building blockchain and security skills enterprise-wide

AI Red Teaming

Adversarial testing against real-world AI threats

AI Security Assessment

Identifying vulnerabilities in AI models and pipelines

Blockchain Layer 1 Assessment

Protocol-level security review of L1 networks

Code Security Audit

Uncovering vulnerabilities in your source code

Web Application Penetration Testing

Exposing exploitable flaws in web applications

Cloud Infrastructure Penetration Testing

Finding weaknesses across cloud environments

Red Team Exercise

Full-scope adversarial simulation of your defenses

Smart Contract Assessment

Code security testing for blockchain-powered applications and systems.

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

Brand

Access official logos, fonts, and guidelines

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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// Company

Who trusts us

Halborn takes immense pride in being the trusted security advisor for leading names in blockchain and financial services industries. Our impressive roster includes notable crypto organizations such as Solana, Coinbase, Bored Ape Yacht Club, Ava Labs, Animoca, Dapper Labs, and many more.

Moreover, traditional financial institutions turn to us to secure their clients' digital assets and seamlessly integrate blockchain technology into their operations.

The trust placed in Halborn by these distinguished organizations is a testament to our unwavering commitment to safeguarding their digital endeavors, further reinforcing our position as the go-to security partner for those who demand nothing short of the best.

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1inch
1inch
21co
21co
ADI
ADI
AMINA Bank
AMINA Bank
Animoca Brands
Animoca Brands
Arculus
Arculus
Ava Labs
Ava Labs
Axelar
Axelar
Banca Sella
Banca Sella
Banco Central Do Brasil
Banco Central Do Brasil
Bank Frick
Bank Frick
Benqi
Benqi
Biconomy
Biconomy
Binance US
Binance US
BitGo
BitGo
Bitso
Bitso
Bored Ape Yacht Club
Bored Ape Yacht Club
Brevan Howard Digital
Brevan Howard Digital
BSV Association
BSV Association
Circle
Circle
Coinbase
Coinbase
Coinbase Asset Management
Coinbase Asset Management
Crossmint
Crossmint
Dapper
Dapper
Dfns
Dfns
Doma
Doma
dYdX
dYdX
Ethena
Ethena
Ether.fi
Ether.fi
Fio
Fio
Globe
Globe
Grayscale
Grayscale
GSR
GSR
Hedera
Hedera
Hex Trust
Hex Trust
Injective
Injective
IO.NET
IO.NET
LayerZero
LayerZero
Magic Eden
Magic Eden
Mantra
Mantra
Maple Finance
Maple Finance
Matter Labs
Matter Labs
Moonwell
Moonwell
NFTfi
NFTfi
Noble
Noble
OKX
OKX
Ondo
Ondo
Oraichain
Oraichain
Phantom
Phantom
Polygon
Polygon
R3
R3
Rain Protocol
Rain Protocol
Renzo
Renzo
Ripple
Ripple
Router
Router
SBI DAH
SBI DAH
Securitize
Securitize
Solana
Solana
Stellar
Stellar
Story
Story
Sushi
Sushi
Sygnum Bank
Sygnum Bank
Uniswap
Uniswap
Usual
Usual
VerifiedX
VerifiedX
Yuga Labs
Yuga Labs
Zetachain
Zetachain
zkSync
zkSync
Zodia
Zodia
1inch
1inch
21co
21co
ADI
ADI
AMINA Bank
AMINA Bank
Animoca Brands
Animoca Brands
Arculus
Arculus
Ava Labs
Ava Labs
Axelar
Axelar
Banca Sella
Banca Sella
Banco Central Do Brasil
Banco Central Do Brasil
Bank Frick
Bank Frick
Benqi
Benqi
Biconomy
Biconomy
Binance US
Binance US
BitGo
BitGo
Bitso
Bitso
Bored Ape Yacht Club
Bored Ape Yacht Club
Brevan Howard Digital
Brevan Howard Digital
BSV Association
BSV Association
Circle
Circle
Coinbase
Coinbase
Coinbase Asset Management
Coinbase Asset Management
Crossmint
Crossmint
Dapper
Dapper
Dfns
Dfns
Doma
Doma
dYdX
dYdX
Ethena
Ethena
Ether.fi
Ether.fi
Fio
Fio
Globe
Globe
Grayscale
Grayscale
GSR
GSR
Hedera
Hedera
Hex Trust
Hex Trust
Injective
Injective
IO.NET
IO.NET
LayerZero
LayerZero
Magic Eden
Magic Eden
Mantra
Mantra
Maple Finance
Maple Finance
Matter Labs
Matter Labs
Moonwell
Moonwell
NFTfi
NFTfi
Noble
Noble
OKX
OKX
Ondo
Ondo
Oraichain
Oraichain
Phantom
Phantom
Polygon
Polygon
R3
R3
Rain Protocol
Rain Protocol
Renzo
Renzo
Ripple
Ripple
Router
Router
SBI DAH
SBI DAH
Securitize
Securitize
Solana
Solana
Stellar
Stellar
Story
Story
Sushi
Sushi
Sygnum Bank
Sygnum Bank
Uniswap
Uniswap
Usual
Usual
VerifiedX
VerifiedX
Yuga Labs
Yuga Labs
Zetachain
Zetachain
zkSync
zkSync
Zodia
Zodia
John Wu, PresidentAVA Labs

John Wu, President

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.

Siggi Óskarsson, CTOBSV Association

Siggi Óskarsson, CTO

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.

Larin Krämer, Functional Lead, Digital Assets Infrastructure Bank Frick

Larin Krämer, Functional Lead, Digital Assets Infrastructure

Bank Frick

Working with Halborn underlined our commitment to security, transparency, and ongoing excellence in digital asset custody. Their advanced approach to key ceremony auditing supported our mission to set industry-leading standards as a trusted blockchain bank

Shaun Martinak, Researcher, Portfolio ManagerCoinbase Asset Management

Shaun Martinak, Researcher, Portfolio Manager

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.

Brendon Sedo, ContributorCore DAO

Brendon Sedo, Contributor

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.

Jon Eichhorn, Risk DirectorCrossmint

Jon Eichhorn, Risk Director

Crossmint

Halborn provides a quality review process and a positive experience throughout the engagement while performing an in-depth technical analysis. Their review gives us additional comfort in our solutions, knowing they have been audited by a qualified, independent organization.

Inder Singh, VP of Product/TechD3 Inc

Inder Singh, VP of Product/Tech

D3 Inc

The largest registrars trust the Doma platform to bring the $360B+ asset class onchain. Security is paramount, and Halborn ensures the infrastructure is production ready.

Robert Bryan, FounderKarate Combat

Robert Bryan, Founder

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.

Michael Steuer, Co-Founder & CTOMAKE

Michael Steuer, Co-Founder & CTO

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.

James Poole, Founding ContributorRenzo

James Poole, Founding Contributor

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.

Kenny Lei, Engineering ManagerRipple

Kenny Lei, Engineering Manager

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.

Brandon Truong, Head of ProductZetachain

Brandon Truong, Head of Product

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.