Cyfrin
Cyfrin is a blockchain security firm known for deep protocol-level audits across RWA, Yield, Cross Chain. This profile aggregates its audit record, 5,738 findings and notable clients, so you can evaluate fit before requesting a competitive quote through Procur3.
- Audits
- 269
- across 4+ years
- Findings logged
- 5,738
- all severities
- Crit + high + med
- 1,318
- material findings
Source: github.com/Cyfrin/cyfrin-audit-reports
Overview
About Cyfrin
Founded in 2022, Cyfrin is a blockchain security firm specialising in smart contract audits and protocol-level security reviews. The team works primarily in Solidity, Rust, Vyper and Huff, covering engagements across Ethereum, Solana, Arbitrum and related ecosystems. Core areas of expertise include RWA, Yield, Cross Chain, Lending.
With 269 audits on record, Cyfrin has worked with notable protocols including Securitize, stake.link, Linea, MetaMask. The firm's review history provides a transparent track record that teams can evaluate before engaging.
Through Procur3, teams can put their scope to Cyfrin alongside other matched firms and receive a competitive quote without a three-week sales cycle.
- Languages
- Solidity, Rust, Vyper, Huff
- Chains
- Ethereum, Solana, Arbitrum, Optimism, Base, Polygon, zkSync, Hyperliquid
- Expertise
- RWA, Yield, Cross Chain, Lending, DEX, Oracle, Stablecoin, NFT, Liquid Staking, DAO, Bridge, CDP
- Services
- Private Audit, Formal Verification, Security Consulting, Education
Track record
Findings by severity
| Critical, high & medium | 1,318 | 23% |
| Low, informational & other | 4,420 | 77% |
Across 269 audits, Cyfrin has logged 5,738 findings, of which 1,318 were rated critical, high or medium, roughly 23% of the total.
Figures are updated periodically and may not include every engagement. Severity labels follow each report's own classification.
Selected work
Notable clients
- SecuritizeRWA
- stake.linkLiquid Staking
- LineaL2
- MetaMaskWallet
- WormholeCross Chain
- AtumRWA
FAQ
Questions about Cyfrin
Where can I find Cyfrin's audit reports?
Cyfrin publishes its audit reports at github.com/Cyfrin/cyfrin-audit-reports.
What does Cyfrin audit?
Cyfrin lists Private Audit, Formal Verification, Security Consulting and Education across Solidity, Rust, Vyper and Huff, and has published work on Ethereum, Solana, Arbitrum, Optimism, Base, Polygon, zkSync and Hyperliquid.
How much does a Cyfrin audit cost?
Procur3 doesn't hold published pricing for Cyfrin. Audit cost depends on scope, code size and the depth of review. See smart contract audit cost 2026 for typical ranges, or get an indicative figure from the audit cost calculator.
How do I get a quote from Cyfrin?
Post your scope on Procur3 and send it to Cyfrin as a private request, or open it to every matched firm and compare quotes.
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