Résumé : While a vast majority of local governments in Europe are communicating on social media, the situation differs in few states. Although Switzerland is often depicted as a technological advanced and innovative country, cities are still largely resisting the temptation to share information on social media platforms. In this study, we rely on a survey distributed to the communication managers of all cities over 10,000 inhabitants in Switzerland to uncover the reasons explaining this behavior. This approach is preferred to understand what motivates or prevents cities from communicating on social media, focusing mainly on perceptions of risks related to these platforms. Results indicate that some factors identified in the literature on public sector organizations slow down the social media adoption and usage at the local level; but interestingly, the conservative approach to social media preferred by numerous cities also plays a major role in explaining cities’ absence on these platforms.