Human Computer Interaction and Disinformation.- Human and Algorithmic Contributions to Misinformation Online -Identifying the Culprit.- Between Overload and Indifference. Detection of Fake Accounts and Social Bots by Community Managers.- Use and Assessment of Sources in Conspiracy Theorists' Communities.-Credibility Development with Knowledge Graphs.- Automated Detection of Nostalgic Text in the Context of Societal Pessimism.- What is Abusive Language? Integrating Different Views on Abusive Language for Machine Learning.- Automation and Disinformation.- Detecting Malicious Social Bots: Story of a Never-Ending Clash.- The Markets of Manipulation: The Trading of Social Bots on Clearnet and Darknet Markets.- Inside the Tool Set of Automation: Free Social Bot Code Revisited.- Analysis of Automation in Account Engagement for Onsetting Twitter Message Cascades.- How Facebook and Google accidentally created a perfect ecosystem for targeted disinformation.- Between Mainstream and Alternative.- Populist Alternative News Media.- Maintaining Journalistic Authority.- State propaganda on Twitter - How Iranian propaganda accounts tried to negatively in uence the discourse on Saudi Arabia.