Disinformation in Open Online Media: Third Multidisciplinary International Symposium, MISDOOM 2021,

Russian Disinformation, Five Years Later.- Psychological Inoculation AgainstMisinformation.- Computational Challenges and Recent Advancements in Automated Fake News Detection.- Explanatory Gap in Algorithmic News Curation.- Examining Linguistic Biases in Telegram with a Game Theoretic Analysis.- Identifying Topical Shifts in Twitter Streams: An Integration of Non-Negative Matrix Factorisation, Sentiment analysis and Structural Break Models for Large Scale Data.- Is YouTube still a Radicalizer? An Exploratory Study on Autoplay and Recommendation.- Understanding the Impact of and Analysing Fake News about COVID-19 in South Africa.- A Study of Misinformation in Audio Messages Shared in WhatsApp Groups.- Hide and seek in Slovakia: utilizing tracking code data to uncover untrustworthy website networks.- The German Comment Landscape: A Structured Overview of the Opportunities for Participatory Discourse on News Websites.- Evaluating the Role of News Content and Social Media Interactions for Fake News Detection.