Security and Privacy in Social Networks and Big Data

Information Abuse and Political Discourse: People Still Care About Facts: Twitter Users Engage More with Factual Discourse than Misinformation.- Extracting common features of fake news by Multi-Head-Attention.- Twitter Bots Influence on the Russo-Ukrainian War During the 2022 Italian General Elections.- Did State-sponsored Trolls Shape the 2016 US Presidential Election Discourse? Quantifying Influence on Twitter.- Attacks: Data Reconstruction Attack Against Principal Component Analysis.- The Impact of Synthetic Data on Membership Inference Attacks.- Time Is On My Side: Forward-Replay Attacks to TOTP Authentication.- Social Structure and Community: Cyber Security Researchers on Online Social Networks: From the Lens of the UK's ACEs-CSR on Twitter.- The Social and Technological Incentives for Cybercriminals to Engage in Ransomware Activities.- Security and Privacy Matters: Graph Analysis of Blockchain P2P Overlays and their Security Implications.- Secure and Efficient Data Processing for Cloud Computing with Fine-Grained Access Control.- Detection of Privacy-harming Social Media Posts in Italian.- Edge local Dierential Privacy for Dynamic Graphs.- Temporal Analysis of Privacy Enhancing Technology Trac using Deep Learning.