Valentin Wüstholz is Security Researcher at ConsenSys Diligence. He has many years of experience in developing tools and techniques that allow us to produce more reliable and correct software. He received a Ph.D. in Computer Science from ETH Zürich and has been a lead developer for several software analysis tools over the years. Before joining ConsenSys, he built a system for identifying correctness, security, and performance issues in Ethereum smart contracts.