IR
Anthology
Community
Nicolas
Kourtellis
2025
doi
dblp
Welcome to the Dark Side: Analyzing the Revenue Flows of Fraud in the Online Ad Ecosystem.
Emmanouil Papadogiannakis
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Nicolas Kourtellis
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Panagiotis Papadopoulos
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Evangelos P. Markatos
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
doi
dblp
Before & After: The Effect of EU's 2022 Code of Practice on Disinformation.
Emmanouil Papadogiannakis
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Panagiotis Papadopoulos
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Nicolas Kourtellis
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Evangelos P. Markatos
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
2024
doi
dblp
Ad Laundering: How Websites Deceive Advertisers into Rendering Ads Next to Illicit Content.
Emmanouil Papadogiannakis
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Panagiotis Papadopoulos
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Evangelos P. Markatos
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Nicolas Kourtellis
Companion Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, Singapore, May 13-17, 2024
2023
doi
dblp
The Hitchhiker's Guide to Facebook Web Tracking with Invisible Pixels and Click IDs.
Paschalis Bekos
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Panagiotis Papadopoulos
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Evangelos P. Markatos
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Nicolas Kourtellis
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi
dblp
Who Funds Misinformation? A Systematic Analysis of the Ad-related Profit Routines of Fake News Sites.
Emmanouil Papadogiannakis
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Panagiotis Papadopoulos
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Evangelos P. Markatos
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Nicolas Kourtellis
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi
dblp
Privacy-Preserving Online Content Moderation: A Federated Learning Use Case.
Pantelitsa Leonidou
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Nicolas Kourtellis
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Nikos Salamanos
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Michael Sirivianos
Companion Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi
dblp
Privacy-Preserving Online Content Moderation with Federated Learning.
Pantelitsa Leonidou
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Nicolas Kourtellis
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Nikos Salamanos
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Michael Sirivianos
Companion Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
2022
doi
dblp
On the Aggression Diffusion Modeling and Minimization in Twitter.
Marinos Poiitis
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Athena Vakali
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Nicolas Kourtellis
ACM Transactions on the Web 2022 Volume 16 Issue 1
doi
dblp
Leveraging Google's Publisher-Specific IDs to Detect Website Administration.
Emmanouil Papadogiannakis
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Panagiotis Papadopoulos
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Evangelos P. Markatos
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Nicolas Kourtellis
WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022
2021
doi
dblp
User Tracking in the Post-cookie Era: How Websites Bypass GDPR Consent to Track Users.
Emmanouil Papadogiannakis
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Panagiotis Papadopoulos
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Nicolas Kourtellis
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Evangelos P. Markatos
WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021.
2020
doi
dblp
Stop tracking me Bro! Differential Tracking of User Demographics on Hyper-Partisan Websites.
Pushkal Agarwal
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Sagar Joglekar
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Panagiotis Papadopoulos
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Nishanth Sastry
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Nicolas Kourtellis
WWW '20: The Web Conference 2020, Taipei, Taiwan, April 20-24, 2020
2019
doi
dblp
Detecting Cyberbullying and Cyberaggression in Social Media.
Despoina Chatzakou
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Ilias Leontiadis
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Jeremy Blackburn
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Emiliano De Cristofaro
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Gianluca Stringhini
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Athena Vakali
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Nicolas Kourtellis
ACM Transactions on the Web 2019 Volume 13 Issue 3
doi
dblp
Cookie Synchronization: Everything You Always Wanted to Know But Were Afraid to Ask.
Panagiotis Papadopoulos
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Nicolas Kourtellis
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Evangelos P. Markatos
The World Wide Web Conference, WWW 2019, San Francisco, CA, USA, May 13-17, 2019
2018
doi
dblp
The Cost of Digital Advertisement: Comparing User and Advertiser Views.
Panagiotis Papadopoulos
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Nicolas Kourtellis
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Evangelos P. Markatos
Proceedings of the 2018 World Wide Web Conference on World Wide Web, WWW 2018, Lyon, France, April 23-27, 2018
2017
doi
dblp
To Be Connected, or Not to Be Connected: That is the Minimum Inefficiency Subgraph Problem.
Natali Ruchansky
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Francesco Bonchi
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David García-Soriano
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Francesco Gullo
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Nicolas Kourtellis
Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, CIKM 2017, Singapore, November 06 - 10, 2017
doi
dblp
Detecting Aggressors and Bullies on Twitter.
Despoina Chatzakou
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Nicolas Kourtellis
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Jeremy Blackburn
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Emiliano De Cristofaro
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Gianluca Stringhini
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Athena Vakali
Proceedings of the 26th International Conference on World Wide Web Companion, Perth, Australia, April 3-7, 2017
doi
dblp
Measuring #GamerGate: A Tale of Hate, Sexism, and Bullying.
Despoina Chatzakou
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Nicolas Kourtellis
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Jeremy Blackburn
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Emiliano De Cristofaro
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Gianluca Stringhini
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Athena Vakali
Proceedings of the 26th International Conference on World Wide Web Companion, Perth, Australia, April 3-7, 2017
2015
doi
dblp
The Social World of Content Abusers in Community Question Answering.
Md. Imrul Kayes
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Nicolas Kourtellis
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Daniele Quercia
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Adriana Iamnitchi
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Francesco Bonchi
Proceedings of the 24th International Conference on World Wide Web, WWW 2015, Florence, Italy, May 18-22, 2015
2012
doi
dblp
Branded with a scarlet "C": cheaters in a gaming social network.
Jeremy Blackburn
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Ramanuja Simha
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Nicolas Kourtellis
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Xiang Zuo
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Matei Ripeanu
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John Skvoretz
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Adriana Iamnitchi
Proceedings of the 21st World Wide Web Conference 2012, WWW 2012, Lyon, France, April 16-20, 2012