Halborn Inc.

Halborn Inc. is a blockchain security firm founded in 2019. It provides security assessments, penetration testing, smart contract security review and vulnerability research for financial institutions and Web3 companies. The firm employs more than 100 people across over 20 countries and operates remote-first.

Its technical work spans blockchain and cryptocurrency security, adversarial security assessment and zero-day vulnerability discovery. Zero-day vulnerabilities uncovered by Halborn have affected networks worth over $25 billion. The company developed the Blockchain Vulnerability Scoring System (BVSS), a framework for scoring blockchain vulnerabilities, and delivers Continuous Security Assessments, which are ongoing assessments routed to production environments rather than one-off reports.

The team comprises white hat hackers, security engineers and cryptocurrency specialists working across the blockchain/Web3, financial services and digital asset sectors. Staff set their own hours and work from anywhere; the firm states that it prioritises impact over facetime and values agility, including a willingness to pivot mid-project.