Simon Zuckerbraun is a security researcher with Hewlett-Packard Security Research (HPSR). In this role, Zuckerbraun analyzes and performs root-cause analysis on hundreds of vulnerabilities submitted to the Zero Day Initiative (ZDI) program, which is the world's largest vendor-agnostic bug bounty program. Zuckerbraun also engages in original vulnerability research for HPSR and has discovered numerous critical vulnerabilities, primarily in Microsoft Internet Explorer. Zuckerbraun has a B.A. in Mathematics from Princeton University.