Trail of Bits publishes security reviews, research, open-source tools, and talks covering software, blockchains, and AI systems.
Cyfrin
Cyfrin provides blockchain security audits, developer courses, and security research for protocols, institutions, and engineers.
About Cyfrin
Cyfrin is a blockchain security company that offers smart contract audits, penetration testing, formal verification, risk assessment, security advisory, and incident response for blockchain protocols, institutions, and enterprises. It also runs a security research library of blockchain vulnerabilities, exploits, and mitigations, and provides developer education and certifications for engineers and operators.
The homepage lists audit coverage across several blockchain networks, including Ethereum, Arbitrum, Base, Solana, and Sui. Most services are presented with a link to book a consultation, so access to specific services appears to start with contacting the company. The homepage does not state prices, and the source text is cut off before it describes the Solodit, Aderyn, and Moccasin products in detail.
Key features
- Smart contract security audits with manual code analysis and mitigation support
- Penetration testing of web apps, APIs, infrastructure, and crypto-native components
- Formal verification that uses mathematical proofs to check system behavior
- Risk assessment with full stack review, economic modeling, and simulations
- Incident response covering containment, recovery, remediation, and on-chain analysis
- Searchable library of blockchain vulnerability and exploit security reports
Best for: Blockchain protocol teams, financial institutions, and enterprises that need security audits, incident response, or customized training for their engineers.
Good for
- Covers audits, penetration testing, formal verification, and incident response in one provider
- Lists audit coverage across multiple blockchain networks, including Ethereum, Arbitrum, Solana, and Sui
- Offers a searchable library of security reports from other firms
Watch out for
- The homepage does not state pricing for any service
- Most services are accessed by booking a consultation rather than through a published self-serve option
Cyfrin at a glance
- Website
- cyfrin.io
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Developers
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Cyfrin alternatives
Tools and sites you could use instead, ranked by how closely they match.
Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.
RockawayX invests in Web3 ventures and provides blockchain infrastructure, liquidity, and engineering support for protocols and founders.
CertiK combines formal verification, security audits, and monitoring tools to assess smart contracts and blockchain protocols.
Hexens audits blockchain systems and offers continuous threat exposure monitoring, alongside research on smart contract platform vulnerabilities.
BlockSec combines crypto compliance and security tools for screening illicit fund flows, auditing contracts, and monitoring DeFi protocols.
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Cyfrin FAQ
Which blockchain networks does Cyfrin list for security work?
The homepage lists Ethereum, ZKsync, Arbitrum, Avalanche, Binance, Base, Optimism, Polygon, Solana, Aztec, Monad, Abstract, TON, Sui, Tron, Aptos, and Starknet.
Does Cyfrin offer training for developers?
Yes. The homepage describes enterprise education with customized training paths for engineers and operators, along with a developer education offering called Updraft and industry-recognized certifications.
Does the homepage show pricing?
No. The homepage does not list prices, so pricing is unknown from the source.
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