Selected Publications

• Aristodemos Paphitis, Nicolas Kourtellis, Michael Sirivianos. “A First Look into the Structural Properties and Resilience of Blockchain Overlays”. Under submission, 2021. pdf
• Kostantinos Papadamou, Savvas Zannettou, Jeremy Blackburn, Emiliano De Cristofaro, Gianluca Stringhini, Michael Sirivianos. ” “How over is it?” Understanding the Incel Community on YouTube”. ACM Conference on Computer Supported Cooperative Work and Social Computing (CSCW), 2021. pdf
• Kostantinos Papadamou, Savvas Zannettou, Jeremy Blackburn, Emiliano De Cristofaro, Gianluca Stringhini, Michael Sirivianos. ” “It is just a flu”: Assessing the Effect of Watch History on YouTube’s Pseudoscientific Video Recommendations”. International AAAI Conference On Web And Social Media (ICWSM), 2022. (conditional accept) pdf
• Harrison Hartle, Fragkiskos Papadopoulos, and Dmitri Krioukov. “Dynamic Hidden-Variable Network Models”. arXiv, 2021. pdf
• Michael A. Georgiou, Aristodemos Paphitis, Michael Sirivianos, Herodotos Herodotou. “Hihooi: A Database Replication Middleware for Scaling Transactional Databases Consistently”. IEEE Transactions on Knowledge and Data Engineering, 2020. pdf
• Kostantinos Papadamou, Savvas Zannettou, Giuseppe Bianchi, Alberto Caponi, Annamaria Recupero, Steven Gevers, George Gugulea, Sorin Teican, Bogdan Chifor, Christos Xenakis, Michael Sirivianos. “Killing the Password and Preserving Privacy with Device-Centric and Attribute-based Authentication”. IEEE Transactions on Information Forensics and Security, 2020. pdf
  In the news: El Pais, Philenews, Cordis, Forbes Romania.
• Marco A. Rodríguez-Flores and Fragkiskos Papadopoulos. “Hyperbolic Mapping of Human Proximity Networks”. Scientific Reports, Vol. 10, No. 20244, 2020. pdf
• Savvas Zannettou, Tristan Caulfield, Emiliano De Cristofaro, Michael Sirivianos, Gianluca Stringhini, Jeremy Blackburn. “Disinformation Warfare: Understanding State-Sponsored Trolls on Twitter and Their Influence on the Web”. Workshop on Computational Methods in CyberSafety, Online Harassment and Misinformation, co-located with The Web Conference, 2019. long version, pdf
  In the news: The Register, The Conversation, Houston Chronicle, US News.
  Policy: Regulating disinformation with artificial intelligence, EU Parliament Research Service.
• Ivan Voitalov, Pim van der Hoorn, Maksim Kitsak, Fragkiskos Papadopoulos and Dmitri Krioukov. “Weighted hypersoft configuration model”. Physical Review Research, Vol. 2, Issue 4. 2020. pdf
• Kostantinos Papadamou, Antonis Papasavva, Savvas Zannettou, Jeremy Blackburn, Nicolas Kourtellis, Ilias Leontiadis, Gianluca Stringhini, Michael Sirivianos. “Disturbed YouTube for Kids: Characterizing and Detecting Disturbing Content on YouTube”. International AAAI Conference on Web and Social Media (ICWSM), 2020. pdf
  In the news: Bleepingcomputer, Zing.vn, New Scientist, Reddit, Washington Post.
• Saeed Osat, Filippo Radicchi, and Fragkiskos Papadopoulos. “Latent geometry and dynamics of proximity networks”. Physical Review Research, Vol. 2, Issue 2, 2020. pdf
• Savvas Zannettou, Tristan Caulfield, William Setzer, Michael Sirivianos, Gianluca Stringhini, Jeremy Blackburn. “Who Let The Trolls Out? Towards Understanding State-Sponsored Trolls”. ACM International Web Science Conference (WebSci), 2019. pdf
  In the news: TechXplore.
• Fragkiskos Papadopoulos and Marco Antonio Rodríguez Flores. “Latent geometry and dynamics of proximity networks”. Physical Review E, Vol. 100, Issue 5, 2019. pdf

• Savvas Zannettou, Michael Sirivianos, Jeremy Blackburn, Nicolas Kourtellis. “The Web of False Information: Rumors, Fake News, Hoaxes,Clickbait, and Various Other Shenanigans”.ACM Journal of Data and Information Quality, 2019. pdf
• Fragkiskos Papadopoulos and Kaj-Kolja Kleineberg. “Link persistence and conditional distances in multiplex networks, “.Physical Review E, Vol. 99, Issue 1, 2019. pdf

• Savvas Zannettou, Tristan Caulfield, Jeremy Blackburn, Emiliano De Cristofaro, Michael Sirivianos, Gianluca Stringhini, and Guillermo Suarez-Tangil. “On the Origins of Memes by Means of Fringe Web Communities”. ACM Internet Measurement Conference (IMC), 2018. pdf
  In The News: QUARTZ, Business Insider, Nerdcore, MIT Technology Review, VICE, InfoWars, Dailydot, Indy100, Thinkprogress, Iflscience, Hornet, Washington Post, BBC News, The Conversation, Rappler, El Pais, MotherJones, Raw Story, Bellingcat, Infowars, I-D Vice.
  Awards: Distinguished Paper.
• Antigoni-Maria Founta, Constantinos Djouvas, Despoina Chatzakou, Ilias Leontiadis, Jeremy Blackburn, Gianluca Stringhini, Athena Vakali, Michael Sirivianos and Nicolas Kourtellis. “Large Scale Crowdsourcing and Characterization of Twitter Abusive Behavior”. International AAAI Conference on Web and Social Media (ICWSM), 2018.pdf

• Savvas Zannettou, Jeremy Blackburn, Emiliano De Cristofaro, Michael Sirivianos, Gianluca Stringhini. “Understanding Web Archiving Services and Their (Mis)Use on Social Media”. International AAAI Conference on the Web and Social Media (ICWSM), 2018. pdf.
  In the news: Newswise.

• Savvas Zannettou, Sotirios Chatzis, Kostantinos Papadamou, Michael Sirivianos. “The Good, the Bad and the Bait: Detecting and Characterizing Clickbait on YouTube”. 1st Deep Learning and Security Workshop, co-located with the 39th IEEE Symposium on Security and Privacy, 2018. pdf.

• Savvas Zannettou, Barry Bradlyn, Emiliano De Cristofaro, Michael Sirivianos, Gianluca Stringhini, Haewoon Kwak, Jeremy Blackburn. ” What is Gab? A Bastion of Free Speech or an Alt-Right Echo Chamber?”. Workshop on Computational Methods in CyberSafety, Online Harassment and Misinformation, co-located with The Web Conference, 2018. pdf.
  In the news: New Scientist

• Savvas Zannettou, Tristan Caulfield, Emiliano De Cristofaro, Michael Sirivianos, Gianluca Stringhini, Jeremy Blackburn “Disinformation Warfare: Understanding State-Sponsored Trolls on Twitter and Their Influence on the Web”, 2018. pdf.
  In the news: The Register
• Marco Antonio Rodríguez Flores and Fragkiskos Papadopoulos “Similarity forces and recurrent components in human face-to-face interaction networks”, 2018. pdf.

• Savvas Zannettou, Tristan Caulfield, Emiliano De Cristofaro, Nicolas Kourtellis, Ilias Leontiadis, Michael Sirivianos, Gianluca Stringhini, Jeremy Blackburn. “The Web Centipede: Understanding How Web Communities Influence Each Other Through the Lens of Mainstream and Alternative News Sources”. ACM Internet Measurement Conference, 2017. pdf
  In the news: The Atlantic, Benthamsgaze, Hackingdistributed, UAB News.

• Costas Iordanou, Claudio Soriente, Michael Sirivianos and Nikolaos Laoutaris. “Who is Fiddling with Prices? Building and Deploying a Watchdog Service for E-commerce”. ACM SIGCOMM, 2017. pdf, tech-report, software tool
  In the news: Business Insider.

• Savvas Zannettou, Tristan Caulfield, Emiliano De Cristofaro, Nicolas Kourtellis, Ilias Leontiadis, Michael Sirivianos, Gianluca Stringhini, Jeremy Blackburn. “The Web Centipede: Understanding How Web Communities Influence Each Other Through the Lens of Mainstream and Alternative News Sources”. ACM Internet Measurement Conference, 2017. pdf

• Gabriel Emile Hine, Jeremiah Onaolapo, Emiliano De Cristofaro, Nicolas Kourtellis, Ilias Leontiadis, Riginos Samaras, Gianluca Stringhini and Jeremy Blackburn. “Kek, Cucks, and God Emperor Trump: A Measurement Study of 4chan’s Politically Incorrect Forum and Its Effects on the Web”.  In Proceedings of the International Conference on Web and Social Media 2017 (ICWSM’17). pdf.
  

• Geometric correlations mitigate the extreme vulnerability of multiplex networks against targeted attacks, Kaj-Kolja Kleineberg, Lubos Buzna, Fragkiskos Papadopoulos, Marian Boguna, and M. Angeles Serrano, Physical Review Letters, Vol. 118, Issue 21, May 2017.

• Latent Geometry of Bipartite Networks, Maksim Kitsak, Fragkiskos Papadopoulos, and Dmitri Krioukov, Physical Review E, Vol. 95, Issue 3, March 2017.

• “Hidden Geometric Correlations in Real Multiplex Networks”. Kaj-Kolja Kleineberg, Marian Boguna, M. Angeles Serrano, and Fragkiskos Papadopoulos.  Nature Physics, Vol. 12, No. 11, November 2016. pdf.

• “Hamiltonian Dynamics of Preferential Attachment”.Konstantin Zuev, Fragkiskos Papadopoulos, and Dmitri Krioukov. Journal of Physics A: Mathematical and Theoretical, Vol. 49, No. 10, January 2016. pdf.

• Qiang Cao, Michael Sirivianos, Xiaowei Yang and Kamesh Munagala. “Combating Friend Spam Using Social Rejections”. IEEE 35th International Conference on Distributed Computing Systems. 2015. pdf , tech-report

• Fragkiskos Papadopoulos, Rodrigo Aldecoa, and Dmitri Krioukov. “Network Geometry Inference Using Common Neighbors”, Physical Review E (PRE), Vol. 92, Issue 2. 2015. pdf.

• Fragkiskos Papadopoulos, Constantinos Psomas, and Dmitri Krioukov. “Network Mapping by Replaying Hyperbolic Growth”.  IEEE/ACM Transactions on Networking (ToN), Vol. 23, Issue. 2015. pdf.

• Michael Sirivianos, Kyungbaek Kim, Jian Wei Gan and Xiaowei Yang. “Leveraging Social Feedback to Verify Online Identity Claims”. ACM Transactions on the Web (TWEB). 2014. pdf

• Constantinos Psomas and Fragkiskos Papadopoulos. “Performance Rescaling of Complex Networks”. IEEE Communications Letters, Vol. 18, Issue 4. 2014. pdf.

• Wei-Cherng Liao, Fragkiskos Papadopoulos, Konstantinos Psounis, and Constantinos Psomas. “Modeling BitTorrent-like systems with many classes of users”. ACM Transactions on Modeling and Computer Simulation (TOMACS), vol. 23, no. 2. 2013. pdf.

• Fragkiskos Papadopoulos, Maksim Kitsak, M. Ángeles Serrano, Marián Boguñá, and Dmitri Krioukov. “Popularity versus Similarity in Growing Networks”. Nature, vol. 489, no. 7417. 2012. pdf.

• Fragkiskos Papadopoulos, Constantinos Psomas, and Dmitri Krioukov. “Replaying the Geometric Growth of Complex Networks and Application to the AS Internet”. 14th ACM SIGMETRICS Workshop on Mathematical Performance Modeling and Analysis (MAMA), London, UK, June 2012, ACM SIGMETRICS Performance Evaluation Review, Vol. 40, Issue 3, December 2012. pdf.

• Laszlo Gyarmati, Rade Stanojevic, Michael Sirivianos and Nikolaos Laoutaris. “Sharing the Cost of Backbone Networks: Cui Bono?”. ACM conference on Internet Measurement. 2012. pdf

• Qiang Cao, Michael Sirivianos, Xiaowei Yang and Tiago Pregueiro. “Aiding the Detection of Fake Accounts in Large Scale Social Online Services”. USENIX conference on Networked Systems Design and Implementation (NSDI). 2012. pdf  

Other Publications

• Utkucan Balci  Michael Sirivianos, Jeremy Blackburn. “Exploring Left-Wing Extremism on the Decentralized Web: An Analysis of Lemmygrad.ml “. Decentralizing the Web (DeWeb), International Conference on the Web and Social Media (ICSWM) workshops, 2024. pdf
• Michael A. Georgiou, Michael Panayiotou, Lambros Odysseos, Aristodemos Paphitis, Michael Sirivianos, Herodotos Herodotou. “SAttaining Workload Scalability and Strong Consistency for Replicated Databases with Hihooi”. ACM SIGMOD Demonstration Track, 2021. pdf
• Aristeidis Farao, Sakshyam Panda, Sofia Anna Menesidou, Entso Veliou, Nikolaos Episkopos, George Kalatzantonakis, Farnaz Mohammadi, Nikolaos Georgopoulos, Michael Sirivianos, Nikos Salamanos, Spyros Loizou, Michalis Pingos, John Polley, Andrew Fielder, Emmanouil Panaousis, Christos Xenakis. “SECONDO: A Platform for Cybersecurity Investments and Cyber Insurance Decisions”. International Conference on Trust and Privacy in Digital Business (TrustBus), 2020. pdf
• Markos Charalambous, Petros Papagiannis, Antonis Papasavva, Pantelitsa Leonidou, Rafael Constaninou, Lia Terzidou, Theodoros Christophides, Pantelis Nicolaou, Orfeas Theofanis, George Kalatzantonakis, Michael Sirivianos. “A Privacy-Preserving Architecture for the Protection of Adolescents in Online Social Networks”. The Fifth International Conference on Cyber-Technologies and Cyber-Systems (CYBER), 2020. pdf, presentation
• Nikos Salamanos, Michael J. Jensen, Xinlei He, Yang Chen, Costas Iordanou, Michael Sirivianos. “Did State-sponsored Trolls Shape the US Presidential Election Discourse? Quantifying Influence on Twitter”. ArXiv, 2020. pdf
• Nikos Salamanos, Michael J. Jensen, Xinlei He, Yang Chen, Michael Sirivianos. “On the Influence of Twitter Trolls during the 2016 US Presidential Election”. ArXiv, 2019. pdf
• Nikos Salamanos, Michael J. Jensen, Xinlei He, Yang Chen, Michael Sirivianos. “On the Influence of Twitter Trolls during the 2016 US Presidential Election”. ArXiv, 2019. pdf
• Michael J. Jensen, Nikos Salamanos, Xinlei He, Yang Chen, Michael Sirivianos. “Russian Information Operations: Strategies And Tactics Of Influence”. Annual Meeting of the American Political Science Association, 2019. presentation, pdf
• Michael Georgiou, Aristodemos Paphitis, Michael Sirivianos, Herodotos Herodotou. “Towards Auto-Scaling Existing Transactional Databases with Strong Consistency”. International Workshop on Self-Managed Databases, co-located with IEEE ICDE, 2019. pdf
• Savvas Zannettou, Michael Sirivianos, Jeremy Blackburn, Nicolas Kourtellis. “The Web of False Information: Rumors, Fake News, Hoaxes, Clickbait, and Various Other Shenanigans”. ACM Journal of Data and Information Quality, 2019. pdf
• Savvas Zannettou, Sotirios Chatzis, Kostantinos Papadamou, Michael Sirivianos. “The Good, the Bad and the Bait: Detecting and Characterizing Clickbait on YouTube”. 1st Deep Learning and Security Workshop, co-located with the 39th IEEE Symposium on Security and Privacy, 2018. pdf
• Jeremy Blackburn, Emiliano De Cristofaro, Michael Sirivianos and Thorsten Strufe. “Cybersafety in Modern Online Social Networks (Dagstuhl Reports 17372)”. Dagstuhl Reports, Schloss Dagstuhl-Leibniz-Zentrum fuer Informatik, 2018. pdf 
• Andri Ioannou, Jeremy Blackburn, Gianluca Stringhini, Emiliano De Cristofaro, Nicolas Kourtellis, Michael Sirivianos “From Risk Factors to Detection and Intervention: A Practical Proposal for Future Work on Cyberbullying” Behaviour & Information Technology (TBIT), 2018. pdf.
• Antigoni Parmaxi, Kostantinos Papadamou, Michael Sirivianos and Makis Stamatellatos. “E-safety in Web 2.0 learning environments: a research synthesis and implications for researchers and practitioners”. HCI International. 2017. pdf.
• Savvas Zannettou, Michael Sirivianos, and Fragkiskos Papadopoulos. “Exploiting Path Diversity in Datacenters using MPTCP-aware SDN”. IEEE Symposium on Computers and Communications (ISCC), Messina, Italy, June 2016. pdf.
• Kwstantinos Papadamou, Riginos Samaras and Michael Sirivianos. “Ensuring Authenticity and Fidelity of Captured Photos using Trusted Execution and Mobile Application Licensing Capabilities”. 11th International Conference on Availability, Reliability and Security (ARES). 2016. pdf
• Andreas Tsirtsis, Nicolas Tsapatsoulis, Makis Stamatelatos, Kwstantinos Papadamou and Michael Sirivianos. Cyber Security Risks for Minors: A Taxonomy and a Software Architecture. 11th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP). 2016. pdf
• Savvas Zannettou, Fragkiskos Papadopoulos, and Michael Sirivianos. “Exploiting Path Diversity with Multipath TCP”. USENIX Symposium on Networked Systems Design and Implementation (NSDI), Oakland, CA, May 2015 (poster). pdf.