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      AI Advisory

      Strategic guidance for secure AI adoption

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      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

    • 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.

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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

      Case Studies

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

      Reports

      Comprehensive reports and data

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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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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.

ISO 27001:2022
ISO 27001:2022certified
SOC2 TYPE2
SOC2 TYPE2certified
NIST CSF 2.0
NIST CSF 2.0aligned
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Trusted By The World's Largest Banks And Financial Institutions

Case Studies

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Framework

A Framework for Measuring, Assessing, and Rating Risk in Stablecoins

Halborn's standard framework for measuring, assessing, and rating risk across stablecoin asset classes including collateralized, algorithmic, rebase, and seigniorage designs.

Download Framework

Whitepaper

DAML & CANTON: THE TRUST LAYER FOR REGULATED LEDGERS

Halborn's whitepaper explains how Daml and Canton enable regulated DLT with strict privacy, synchronized validation, and fewer reconciliation failures.

Download Whitepaper

Whitepaper

Guide to Digital Asset Treasury and DATCOs

A comprehensive guide to digital asset treasury management and DATCOs (Digital Asset Treasury and Custody Operations).

Download Whitepaper
Case Study: Bank Frick Strengthens $1B Crypto Custody with Halborn
Enterprise

Bank Frick Strengthens $1B Crypto Custody with Halborn

Read the Case Study→

$1B

Crypto under custody secured

Services

  • Custody and Key Management Assessment
Case Study: Hardening Critical CBDC Pilot Infrastructure for a Major Financial Institution
Public Sector

Hardening Critical CBDC Pilot Infrastructure for a Major Financial Institution

Read the Case Study→

4 Criticals

Vulnerabilities found alongside 9 High and 3 Medium

Services

  • Red Team Exercise
  • Smart Contract Assessment
Case Study: Securing $360B+ in Tokenized Domains with Doma Protocol
DeFi

Securing $360B+ in Tokenized Domains with Doma Protocol

Read the Case Study→

$360B+

Value of onchain asset class secured

Services

  • Smart Contract Assessment
Case Study: Halborn’s Security Assessment Ensures The Protection Of $850M+ For Blueprint Finance’s DeFi Protocols

Halborn’s Security Assessment Ensures The Protection Of $850M+ For Blueprint Finance’s DeFi Protocols

Read the Case Study→

$850M+

Value protected through security assessment

Services

  • Red Team Exercise
  • Smart Contract Assessment
Case Study: Securing the First Cross-Border Digital Bond Repo

Securing the First Cross-Border Digital Bond Repo

Read the Case Study→

3 Banks

Involved in the pilot project

Services

  • Smart Contract Assessment
Case Study: Supporting a Large Settlement and Clearing House with Secure by Design Architecture

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

Read the Case Study→

Zero-Trust

Governance model delivered

Services

  • Blockchain Architecture Assessment

Why Halborn

$1T

Value protected

5

Publicised zero days

3K+

Assessments completed

100+

Security practitioners

800+

Happy clients

15

Platforms & languages

Certifications and Contributions

CISSP
ISO 27001:2022
OffSec Offensive Security Certified Professional (OSCP)
OffSec Offensive Security Certified Expert (OSCE)
OSWE
OffSec Offensive Security Exploitation Expert (OSEE)
AWS Certified
ISACA Certified Information Systems Auditor (CISA)
NIST CSF

Technologies We Assess

Android
Apple
AWS
Avalanche
Celestia
Circle CI
Cloudflare
Cosmos
Flow
Gitlab
Google Cloud
Hasura
Kubernetes
Near
Sei
Solana
Stellar
Sui

Our Solutions

Halborn delivers world-class assurance and advisory services for forward-looking enterprises. Beyond code validation, we partner with industry leaders to design and safeguard transformative initiatives, ensuring that every layer, from architecture to operations, is resilient, secure, and built to scale.

Advisory

Strategic guidance to secure digital asset ecosystems, helping organizations design, validate, and strengthen every layer of their DLT and AI initiatives. Our expertise spans risk assessments, custody frameworks, compliance readiness, due diligence, and technical training, enabling innovation, trust, and regulatory confidence.

Assurance

End-to-end security across the SDLC, from design to deployment and beyond. Through smart contract assessments, penetration testing, and red team simulations, we uncover vulnerabilities in blockchain, cloud, and application environments to safeguard mission-critical systems.

Advisory Solutions

AI Advisory

Strategic and technical advisory to prepare your business for the future with an evaluation of AI systems and integrations. Identify risks, validate designs, and receive strategic guidance for secure and optimal adoption for LLMs, agents, MCP, vector databases, and other AI components.

Learn More

Blockchain Architecture Assessment

A structured review of blockchain system and process designs to assess scalability, resilience, workflows, and security across consensus, governance models, deployment, data, on-chain connectivity, and DLT application layers.

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Compliance Readiness

A thorough assessment, gap analysis and control alignment to prepare organizations that must meet regulatory requirements such as Genius Act, Clarity, MiCA, DORA, VARA, and other emerging compliance mandates for digital assets and cryptocurrencies.

Learn More

Custody and Key Management Assessment

An analysis of digital asset custody models and key management systems to ensure security, redundancy, and resilience.

Learn More

Risk Assessment

A systematic evaluation of threats, vulnerabilities, and potential business impacts to establish a clear cybersecurity risk posture.

Learn More

Technical Due Diligence

Technical security focused evaluation to validate strengths, identify risks, and discover weaknesses that may exist in third-party companies, custodians, or other blockchain-centric service providers.

Learn More

Technical Training

Expert-led education programs designed for enterprise environments to build skills and awareness in blockchain, digital assets custody, smart contracts, and modern security awareness.

Learn More

Security Assurance Solutions

AI Red Teaming

An adversarial simulation targeting businesses that use AI models and systems to discover vulnerabilities, and test resilience against real-world threats including AI-based attack techniques like deep fakes, AI social engineering, malicious LLMs/GPTs, and prompt-injections.

Learn More

AI Security Assessment

A focused evaluation of AI models, data pipelines, and deployment environments to identify vulnerabilities, adversarial risks, and security weaknesses unique to AI systems.

Learn More

Blockchain Layer 1 Assessment

A protocol-level security and performance review of Layer 1 blockchain networks and the underlying code, including consensus mechanisms, node operation, and governance structures.

Learn More

Code Security Audit

A comprehensive source code review that identifies vulnerabilities, insecure practices, and exploitable weaknesses within software applications.

Learn More

Web Application Penetration Testing

A security test of cloud platforms and infrastructure environments like Amazon Web Services, Azure, and Google Cloud to discover configuration weaknesses, access controls gaps, and system-level vulnerabilities.

Learn More

Cloud Infrastructure Penetration Testing

A simulated cyberattack by ethically hacking web applications to uncover exploitable vulnerabilities, logic flaws, and misconfigurations before they can be abused by real-world adversaries.

Learn More

Red Team Exercise

A full-scope adversarial simulation designed to test an organization’s defenses, detection capabilities, and incident response readiness.

Learn More

Smart Contract Assessment

A deep security test of smart contracts to detect logic errors, coding flaws, and vulnerabilities that could compromise blockchain-powered applications and systems.

Learn More

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

Future Financial Services are building on DLT

Distributed Ledger Technology (DLT) is revolutionizing financial services by driving efficiency, security, and transparency. As adoption accelerates, organizations must align innovation with security to preserve value while scaling new opportunities.

Blog

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Web3

06.11.2026

Canton Enterprise Integrations: APIs, Connectors, and Risk Boundaries

Read the full blog
Explained: Hacks

06.08.2026

Explained: The Syscoin Bridge Hack (June 2026)

Read the full blog
Month in Review

06.02.2026

Month in Review: Top DeFi Hacks of May 2026

Read the full blog
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.

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