Sigma Prime

Sigma Prime was founded with the vision of becoming the most trusted name in blockchain security. Over the years, the company has evolved into a multidisciplinary powerhouse that bridges the gap between formal security research and real-world application development. From performing advanced security reviews to actively maintaining key Ethereum infrastructure, Sigma Prime operates at the intersection of critical thinking, technical rigor, and decentralization values.

The firm is best known for Lighthouse, its flagship Ethereum consensus client. Built in Rust, Lighthouse is designed for performance, security, and sustainability. As Ethereum continues to evolve through upgrades like The Merge and future scalability layers, Sigma Prime's contribution via Lighthouse ensures that the consensus layer remains resilient, efficient, and aligned with the core principles of decentralization. The open-source project is recognized across the Ethereum ecosystem for its reliability and has become a go-to solution for validators and node operators.

In addition to protocol engineering, Sigma Prime delivers world-class smart contract security audits for top Web3 platforms. Clients include leading names such as Aave, Chainlink, Arbitrum, Optimism, Lido, Sushi, and the Ethereum Foundation. The team applies a blend of manual code analysis, formal verification, and testing techniques to uncover vulnerabilities and ensure secure deployments across DeFi, layer 2s, and more.

The Sigma Prime approach is thorough and research-driven. Their engineers are not only auditors but also contributors to the Ethereum protocol itself, meaning they understand the systems they’re securing at a fundamental level. This expertise allows the team to perform deep architectural reviews and suggest improvements that extend beyond superficial code fixes.

With clients spanning multiple blockchain verticals—including staking, oracles, DeFi, wallets, and scaling solutions—Sigma Prime is recognized for its versatility and ability to handle complex, mission-critical codebases. Their reputation is backed by a proven track record and a team distributed globally but united by a shared mission: to promote an open, fair, and secure decentralized world.

In contrast to more generalized audit platforms like CertiK or SlowMist, Sigma Prime is deeply entrenched in the technical architecture of Ethereum itself. This positions the firm as a trusted choice for high-stakes reviews that go beyond surface-level assessments. Their work in both research and engineering makes them a preferred security partner for protocols that value depth, decentralization, and long-term sustainability.

Sigma Prime delivers highly specialized Web3 security services that stand out for their quality, depth, and long-term focus:

• Ethereum Core Development: Maintainers of Lighthouse, a secure and efficient Ethereum consensus client written in Rust.
• Advanced Smart Contract Audits: Trusted by protocols like Aave, Arbitrum, Lido, and Chainlink for rigorous and effective security reviews.
• Protocol-Level Expertise: Contributions to Ethereum’s core ensure unparalleled understanding of consensus and staking mechanisms.
• Research-Driven Methodology: Security audits grounded in formal verification, threat modeling, and vulnerability analysis.
• Global Team of Experts: Distributed engineering team with deep experience across Web3 technologies.
• End-to-End Blockchain Security: Services span smart contract auditing, protocol analysis, infrastructure reviews, and cryptographic assessments.

Sigma Prime offers a high-touch onboarding process tailored for teams that need elite-level security reviews. Here's how to engage with Sigma Prime:

• Step 1 – Visit the Website: Go to the official Sigma Prime website and click “Request a Security Review” on the homepage.
• Step 2 – Prepare Your Scope: Outline your codebase, architecture, and specific security needs. Sigma Prime specializes in complex and high-value systems.
• Step 3 – Submit Your Request: Fill out the contact form or email the team directly at [email protected] to begin the conversation.
• Step 4 – Consultation: The team will assess your project and propose a customized audit plan based on size, complexity, and timeline.
• Step 5 – Undergo the Audit: Collaborate with Sigma Prime’s engineers during the audit process, including direct communication and iterative feedback.
• Step 6 – Receive Your Report: Post-review, your team will receive a detailed, peer-reviewed report with actionable recommendations and severity assessments.
• Step 7 – Post-Audit Support: Sigma Prime offers continued support for implementation reviews and can re-audit patched contracts if needed.