This three-day course aims at providing the participants with state-of-the-art knowledge and methodological skills used in current research on digital trust, security, and digital harms including cybercrime. The course consists of an introductory block followed by four substantive blocks focusing on different research topics with practical sessions that introduce some of the methods used in the respective areas. Additionally, there will be a keynote lecture by Prof Daniel Dresner on governance and policy related to digital security and harms after which the participants will have a roundtable discussion with Prof Dresner.