Last updated: October 2026
Chain Defenders
Vetted on Procur3Chain Defenders is a blockchain security firm known for deep protocol-level audits across DeFi, DEX, Token. This profile aggregates its audit record, 400+ findings and notable clients — so you can evaluate fit before requesting a competitive quote through Procur3.
About Chain Defenders
Chain Defenders is a blockchain security firm specialising in smart contract audits and protocol-level security reviews. The team works primarily in Solidity, covering engagements across Ethereum, BNB Chain, Polygon and related ecosystems. Core areas of expertise include DeFi, DEX, Token, NFT.
With 40+ audits on record, Chain Defenders has worked with notable protocols including Phi. The firm's review history provides a transparent track record that teams can evaluate before engaging.
Through Procur3, teams can put their scope to Chain Defenders alongside other matched firms and receive a competitive quote — without a three-week sales cycle.
Findings by severity
| Critical, high & medium | 100+ | 25% |
| Low, informational & other | — | 75% |
Across 40+ audits, Chain Defenders has logged 400+ findings, of which 100+ were rated critical, high or medium — roughly 25% of the total.
Figures are updated periodically and may not include every engagement. Severity labels follow each report's own classification.
Notable clients
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