Performances
RD Popularity Index
RD Growth Index
Comparison
Follow Updates
Follow Lists
People
About Sigma Prime
Sigma Prime is a blockchain security and research company focused on the Ethereum ecosystem. Its core business includes smart contract and infrastructure security audits, development and maintenance of the Lighthouse Ethereum consensus client, and operation of Bombora, an Ethereum block builder.
Its core competitiveness lies in the unique "build and audit" positioning: the team is deeply involved in Ethereum protocol-layer development and operates real production infrastructure, enabling audits informed by first-hand operational experience. The company has also introduced AI assistance in code review, security audits, and other processes since late 2025 to improve efficiency.
Regarding market pain points, Sigma Prime addresses issues such as insufficient Ethereum client diversity, MEV builder centralization, and frequent security vulnerabilities in blockchain infrastructure. Lighthouse is one of the mainstream consensus clients, while Bombora aims to increase competition in the block building market.
Recent development (past half year): Between February and March 2026, the team patched five security advisories in networking dependency libraries including rust-yamux, rust-libp2p, and quinn-proto; during the Pectra upgrade, when the Holesky testnet experienced finality issues, they shipped a hotfix in v7.0.0-beta.1; Bombora launched on mainnet in May 2026 and currently accounts for approximately 1-1.5% of mainnet blocks. The team is also advancing Ethereum roadmap projects such as FOCIL and tree sync.
Sigma Prime (Lighthouse team) has made significant progress in the past six months. Key developments include: releasing Lighthouse v8.2.0 with critical security fixes and substantial ePBS/Gloas preparation; completing a productive Glamsterdam interop week in Svalbard, where the team hardened the EIP-7732 ePBS implementation, added new validator duties, and improved the data availability module; adopting AI-assisted code review and differential fuzzing to accelerate security audits while maintaining quality; and addressing a series of networking vulnerabilities in rust-libp2p dependencies. Future priorities focus on shipping ePBS (Gloas), advancing Fulu data-availability networking with partial data columns (EIP-8136), and continuing their security audit work for DeFi and Layer 2 systems.
Co-founders and key executives of Sigma Prime:
Paul Hauner: Co-founder and Director, core developer of the Lighthouse consensus client. Ethereum core developer from 2018 to 2024, advocating for client diversity and open source.
Mehdi Zerouali: Co-founder and early security specialist focused on Ethereum and decentralized systems; former EY Advanced Security Centre manager, involved in SEAL and regulatory discussions.
Adrian Manning: Co-founder, PhD in theoretical physics, protocol engineer specializing in Ethereum consensus, networking, and protocol security.
Sean Anderson: Director and core contributor to Lighthouse, working on client performance, consensus infrastructure, MEV, and block building.