Disinformation and misinformation are a growing problem affecting citizens, institutions and the general functioning of society. To combat this phenomenon, we need to develop a social resilience that prevents public discourse and debate from being distorted, the credibility of institutions from being undermined and the functioning of democratic processes from being disrupted. And this is the task of all of us. The strategies and techniques used in disinformation processes are becoming increasingly sophisticated and difficult to detect. As citizens, we need to be able to recognise and assess misinformation spread in online environments in order to respond appropriately. The DOMINOES MOOC will enable you to strengthen your digital resilience to disinformation and improve some of the key competences defined in the Digital Competence Framework for Citizens. By the end of this online course, you will better understand what disinformation is in the current technological context, how it works, what its impact is and what measures can be taken to combat it. To this end, DOMINOES provides you with numerous examples, case studies, lessons learned and best practices, simulations and a guide on what still needs to be done and what the biggest challenges are in the fight against disinformation. We are looking for citizens, students and teachers of social and security sciences who are interested in learning more about the current information system and are engaged in the fight against disinformation. We need you. Is the duty of each one of us. The course is developed in collaboration between: "Mihai Viteazul" National Intelligence Academy (MVNIA) – Romania, Ciberimaginario Research Group of the University Rey Juan Carlos– Spain, L-Università ta' Malta, and New Strategic Center – Romania. The course is a result of the project DOMINOES, Digital cOMpetences INformatiOn EcoSystem and Strategic partnership project within ERASMUS+ Programme AGREEMENT NO. - 2021-1-RO01-KA220-HED-000031158