All Stories

  1. Paid to Look Like Truth: The Prevalence and Dark Patterns of Advertorials in News Outlets

    Article • October 2026, ACM (Association for Computing Machinery)

    Panagiotis Papadopoulos, Nicolas Kourtellis

  2. PIIxel Leaks: Passive Identification of Personally Identifiable Information Leakage through Meta Pixel

    Article • November 2025, ACM (Association for Computing Machinery)

    Nicolas Kourtellis, Panagiotis Papadopoulos

  3. Before & After: The Effect of EU's 2022 Code of Practice on Disinformation

    Article • April 2025, ACM (Association for Computing Machinery)

    Nicolas Kourtellis, Panagiotis Papadopoulos

  4. Welcome to the Dark Side: Analyzing the Revenue Flows of Fraud in the Online Ad Ecosystem

    Article • April 2025, ACM (Association for Computing Machinery)

    Panagiotis Papadopoulos, Nicolas Kourtellis

  5. From risk factors to detection and intervention: a practical proposal for future work on cyberbullying

    Article • Behaviour and Information Technology, February 2018, Taylor & Francis

    Nicolas Kourtellis

  6. Enabling Social Applications via Decentralized Social Data Management

    Article • ACM Transactions on Internet Technology, March 2015, ACM (Association for Computing Machinery)

    Nicolas Kourtellis