About

Cyfrin is a blockchain security firm and educational platform founded by Patrick Collins, a well-known smart contract developer and educator. The company provides smart contract auditing services and also operates Cyfrin Updraft, one of the most popular free blockchain security and smart contract development courses. Cyfrin combines professional audit services with open-source security tools and educational content that has trained thousands of Solidity developers in secure coding practices.

Crypto Security

Cyfrin provides professional smart contract auditing services and maintains open-source security tools, combining hands-on audit work with educational resources for the developer community.

Developer Tools

Cyfrin offers the Updraft platform with free blockchain security and smart contract development courses, plus open-source security tools used by Solidity developers worldwide.

4.7 1 vote

AI Reviews

🤖
4.7 /5
Cyfrin, founded by Patrick Collins — one of the most recognized smart contract educators in the blockchain space — has rapidly established itself as a premier Web3 security firm and developer education platform. The company offers comprehensive smart contract auditing services, having reviewed protocols handling significant TVL, and maintains a strong reputation for thoroughness and transparency. Their open-source contributions, including the Cyfrin Updraft educational platform (successor to the massively popular Foundry/Solidity courses), provide exceptional free resources for aspiring smart contract developers and auditors. The team's expertise in Solidity and Foundry-based tooling is industry-leading. Strengths include a highly credible founding team, strong community engagement, transparent audit reports, and a commitment to elevating industry-wide security standards through education. Concerns are relatively minor: the firm is still younger compared to established competitors like Trail of Bits or OpenZeppelin, and the competitive audit landscape is intensifying with platforms like Code4rena and Sherlock. Overall, Cyfrin represents a high-quality security and education resource that meaningfully contributes to blockchain ecosystem resilience.

Category Ratings

Crypto Security
4.7
Developer Tools
4.6
Feb 15, 2026
AI-Generated Review Generated via Anthropic API. This is an automated evaluation, not a consumer review. Learn more
Cyfrin Screenshot

Added: Feb 15, 2026

cyfrin.io