PurposeThis study investigates how communication is used by a Swedish public authority to legitimate the responsibilization of preparedness, i.e. how the state encourages individual citizens to take more responsibility for their security.Design/methodology/approachA multimodal discursive approach drawing on multimodal narrative analysis of video clips and multimodal critical discourse analysis (MCDA) is used to examine how the responsibilization of preparedness is legitimated in video material published on Swedish Civil Contingencies Agency's (MSB’s) YouTube channel.FindingsThe study finds that the responsibilization of preparedness is legitimated through an ongoing but evolving normalization of threat. The findings also show how responsibilization is legitimated in moralizing terms of individual contribution to society, which may indicate a return from neo-liberal values to more traditional Swedish collectivist values.Originality/valueThe study shows how communication around preparedness and responsibilization is discursively constructed and legitimated through multimodal features, while previous research has mainly focused on verbal or written communication.