This report details the findings of one part of the Ohio Secretary of State’s EVEREST: Evaluation and Validation of Election-Related Equipment, Standards and Testing initiative. The goal of this review was to assess the security of electronic voting systems used in Ohio, and to identify any procedures that may eliminate or mitigate discovered issues. The review teams were provided the source-code (computer instructions), software, and election equipment for the majority of systems used in Ohio. During the 9 week review, security researchers at three institutions studied the software and systems and identified and confirmed security issues. The evaluated systems included those designed and developed by Election Systems and Software (ES&S), Hart InterCivic (Hart) and Premier Election Solutions (Premier, formerly Diebold).