Sigma Prime is an independent blockchain security and research firm founded in 2016. The company's core work involves securing critical blockchain systems through auditing, infrastructure development, and security services. It has audited over 400 projects and protects more than $57 billion in total value locked (TVL).
The firm's technical scope spans blockchain security, zero-knowledge systems, smart contract auditing, consensus clients, distributed validator technology, block building, and AI-assisted security tooling. Its primary focus is the Ethereum ecosystem and the broader Web3 space.
Sigma Prime develops several infrastructure products. Lighthouse, an Ethereum consensus client written in Rust, powers roughly 40% of the Ethereum network. Other products include Anchor, a distributed validator technology implementation; Bombora, an Ethereum block builder; and Secstant, an AI-assisted security review tool currently in development.
