This guide explains how cybersecurity issues can compromise traditional aspects of elections, such as maintaining voter lists, verifying voters, counting and casting votes and announcing results. It also describes how cybersecurity interacts with the broader electoral environment and new ways elections are being carried out, such as campaigns and data management by candidates and parties, online campaigns, social media, false or divisive information, and e-voting. Unless carefully managed, all these cybersecurity issues can present a critical threat to public confidence in election outcomes – which are the cornerstone of democracy.