Sigma Prime has an extensive history in penetration testing of corporate networks, cloud infra, web applications, and are a leading provider of Ethereum smart contract security assessments. Sigma Prime founded and maintains Lighthouse, an open-source implementation of the Ethereum 2.0 specification written in Rust, and are heavily involved in Ethereum 2.0 engineering and research. Sigma Prime contributes to various open source projects and research efforts in the blockchain ecosystem. Our work has been published in several research papers and blog articles. Some of Sigma Prime's clients include Chainlink, Dapper, and AlphaWallet.