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Advanced Penetration Testing

In-depth vulnerability identification and mitigation.

Smart Contract Audit

Comprehensive smart contract security assessment

Red Team Exercises

Simulating real-world attacks, strengthening defenses

Security Advisory as a Service

Industry-leading holistic approach to security

Secure by Design

Security Embedded Across the Entire Lifecycle
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The best security engineers in the world

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Work with the elite

Who Trusts Us

The trusted security advisor for blockchain and financial services industries

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Committed to Protecting Your Data
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Audits

In-depth evaluations of smart contracts and blockchain infrastructures

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Blockchain Vulnerability Scoring System

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All the latest vulnerabilities discovered by Halborn

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### SOLUTIONS

SCA

Pen Test

Red Team

SAaaS

### COMPANY

Who We Are

Who Trusts Us

Service Commitments

Careers

Brand

Blog

Contact

### RESOURCES

Audits

Disclosures

Reports

BVSS

Case Studies

### SITE

Privacy Policy & Cookies

Terms of Use

Vulnerability Disclosure

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© Halborn 2025. All rights reserved.

## //

# 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.

SOC2 TYPE2certified

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## halborn by the numbers

### $1T

Value Protected

### 5

Publicised Zero Days

### 2.5K+

Assessments Completed

### 100+

Security Practitioners

### 600+

Happy Clients

### 15

Platforms & Languages

Solutions

### Smart
Contract Audit

### Advanced Penetration
Testing

### Red
Team Exercises

### Security Advisory as a Service

## Customer Reviews

#### Trusted by

#### Featured In

##### Blockchain Security

Designing for Failure: Security Architecture that Assumes Breach

08.06.2025

##### Explained: Hacks

Explained: The CrediX Hack (August 2025)

08.04.2025

##### Month in Review

Month in Review: Top DeFi Hacks of July 2025

08.04.2025

##### Explained: Hacks

Explained: The WOO X Hack (July 2025)

07.29.2025

#### Certifications

### 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.

### 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.

### 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.

### 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.

### Anthony Rose, Head of Engineering
#### 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

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

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

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

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

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

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.

#### Trusted by

### // Case Study

### HARDENING INFRASTRUCTURE FOR A B2B CRYPTO CUSTODY PROVIDER
#### Client: 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

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)

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

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

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

Read the full story