Halborn
Vetted on Procur3 · est. 2019Halborn is a blockchain security firm known for deep protocol-level audits across DEX, Lending, Bridge. This profile aggregates its public audit record, 4100 findings and notable clients — so you can evaluate fit before requesting a competitive quote through Procur3.
About Halborn
Founded in 2019, Halborn is a blockchain security firm specialising in smart contract audits and protocol-level security reviews. The team works primarily in Solidity, Rust, Go and Move, covering engagements across Ethereum, Solana, Polygon and related ecosystems. Core areas of expertise include DEX, Lending, Bridge, Cross Chain.
With 350 public audits on record, Halborn has worked with notable protocols including Phantom Wallet, BlockFi, Pancakeswap V3, ApeCoin. The firm's review history provides a transparent track record that teams can evaluate before engaging.
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Findings by severity
| Critical | 227 | 5.5% |
| High | 567 | 13.8% |
| Medium | 826 | 20.1% |
| Low | 1,116 | 27.2% |
| Informational | 868 | 21.2% |
| Gas | 496 | 12.1% |
Across 350 public audits, Halborn has logged 4100 findings. Critical and high-severity issues account for roughly 40% of all findings — a profile reflecting thorough, deep-dive analysis across diverse protocol architectures.
Figures aggregated from publicly available audit reports. Counts are updated periodically and may lag the firm's latest private engagements. Severity labels follow each report's own classification.
Notable clients
Incident history
Incidents recorded where a protocol was exploited after a Halborn engagement. Attribution is contextual — a later exploit may fall outside the audited scope or post-date the review. We link the public source so you can judge for yourself.
Exploit in a previously-reviewed protocol
1 public incident is associated with a protocol Halborn had engaged with. The exploited component fell partially outside the original audit scope. See the linked post-mortem for the full timeline and root cause.
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