This report contains the results and analysis of a review of best practices and observations in the field of cybersecurity involving electronic control systems across a variety of industry segments where the safety-of-life is concerned.This research provides relevant benchmarks that are essential to making strategic decisions over the next steps for NHTSA’s research program.This publication is part of a series of reports that describe our initial work under the goal of facilitating cybersecurity best practices in the automotive industry (Goals 1 and 2).The information presented herein increasethe collective knowledge base in automotive cybersecurity; help identify potential knowledge gaps; help describe the risk and threat environments; and help support follow-on tasks that could be used to establish security guidelines.