Halborn

Halborn is a blockchain security firm founded in 2019 by Rob Behnke and Steven Walbroehl, based in Miami, Florida. The company specializes in providing security solutions for the Web3 and blockchain industries. Halborn became profitable from the start and secured $90 million in Series A funding in 2022 to support its growth and product development. The company offers a range of security services, including smart contract audits, penetration testing, code reviews, security advisory, and DevOps automation. Halborn is also developing a pipeline of SaaS security products aimed at enhancing the security of blockchain organizations. With a client base of over 250 organizations, Halborn serves various clients, including the Solana Foundation, Avalanche, and financial institutions, establishing a strong presence in the Web3 security sector.

Computer & Network Security Newport Beach, United States Founded 2019 ~52 employees Private · Series A

Work at Halborn in HR or recruiting? Claim this page

Employees
52
+4% in the 3 months to Jun 2025
Revenue / employee
$171K
Revenue ~$8.9M
Total funding
$90M
Last round Series A, Jul 2022
12-month attrition
29.2%
Tech: 25.3%
H1B filings, FY2024
1
Sponsors visas
Open jobs
1
Last 30 days

Headcount trend

Halborn went from 38 employees in Jul 2023 to 52 in Jun 2025. Jan to Jun 2025: 8 people joined, 5 left.

Headcount data through Jun 2025

Org structure

Headcount by department

Other21
Engineering17
Sales10
HR2
Finance1
Operations1

Hiring now

See all jobs

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
HR1

Funding

  • Jul 2022 · Series A · $90M · Summit Partners, Castle Island Ventures, Digital Currency Group

Peer reviews

Worked with someone at Halborn?

Anonymous peer reviews on OffTheRecord

Read or write a review

Similar companies

Halborn FAQ

How many employees does Halborn have?

Halborn has about 52 employees, up 4% over the 3 months to Jun 2025.

Does Halborn sponsor H1B visas?

Yes. Halborn filed 1 H1B (LCA) application in FY2024, according to the latest U.S. Department of Labor disclosures. It was for a HR role.

What is Halborn's revenue per employee?

Halborn makes about $171K in revenue per employee, based on $8.9M annual revenue and 52 employees.

How much funding has Halborn raised?

Halborn has raised $90M in total funding; its latest round was Series A in Jul 2022.

Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.