Nicolas Kourtellis

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User Tracking in the Post-cookie Era: How Websites Bypass GDPR Consent to Track Users

During the past few years, mostly as a result of the GDPR and the CCPA, ...
02/17/2021 ∙ by Emmanouil Papadogiannakis, et al. ∙ 0 ∙ share

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Under the Spotlight: Web Tracking in Indian Partisan News Websites

India is experiencing intense political partisanship and sectarian divis...
02/06/2021 ∙ by Vibhor Agarwal, et al. ∙ 0 ∙ share

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FLaaS: Federated Learning as a Service

Federated Learning (FL) is emerging as a promising technology to build m...
11/18/2020 ∙ by Nicolas Kourtellis, et al. ∙ 0 ∙ share

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Not one but many Tradeoffs: Privacy Vs. Utility in Differentially Private Machine Learning

Data holders are increasingly seeking to protect their user's privacy, w...
08/20/2020 ∙ by Benjamin Zi Hao Zhao, et al. ∙ 0 ∙ share

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S2CE: A Hybrid Cloud and Edge Orchestrator for Mining Exascale Distributed Streams

The explosive increase in volume, velocity, variety, and veracity of dat...
07/02/2020 ∙ by Nicolas Kourtellis, et al. ∙ 0 ∙ share

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I call BS: Fraud Detection in Crowdfunding Campaigns

Donations to charity-based crowdfunding environments have been on the ri...
06/30/2020 ∙ by Beatrice Perez, et al. ∙ 0 ∙ share

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Catching them red-handed: Real-time Aggression Detection on Social Media

The rise of online aggression on social media is evolving into a major p...
06/17/2020 ∙ by Herodotos Herodotou, et al. ∙ 0 ∙ share

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Angry Birds Flock Together: Aggression Propagation on Social Media

Cyberaggression has been found in various contexts and online social pla...
02/24/2020 ∙ by Chrysoula Terizi, et al. ∙ 0 ∙ share

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Stop Tracking Me Bro! Differential Tracking Of User Demographics On Hyper-partisan Websites

Websites with hyper-partisan, left or right-leaning focus offer content ...
02/03/2020 ∙ by Pushkal Agarwal, et al. ∙ 0 ∙ share

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Clash of the Trackers: Measuring the Evolution of the Online Tracking Ecosystem

Websites are constantly adapting the methods used, and intensity with wh...
07/30/2019 ∙ by Konstantinos Solomos, et al. ∙ 0 ∙ share

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Measuring ad value without bankrupting user privacy

Recent work has demonstrated that by monitoring the Real Time Bidding (R...
07/24/2019 ∙ by Michalis Pachilakis, et al. ∙ 0 ∙ share

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No More Chasing Waterfalls: A Measurement Study of the Header Bidding Ad-Ecosystem

In the last few years, Header Bidding (HB) has gained popularity among w...
07/24/2019 ∙ by Michalis Pachilakis, et al. ∙ 0 ∙ share

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Detecting Cyberbullying and Cyberaggression in Social Media

Cyberbullying and cyberaggression are increasingly worrisome phenomena a...
07/20/2019 ∙ by Despoina Chatzakou, et al. ∙ 0 ∙ share

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Beyond content analysis: Detecting targeted ads via distributed counting

Being able to check whether an online advertisement has been targeted is...
07/03/2019 ∙ by Costas Iordanou, et al. ∙ 0 ∙ share

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A Self-Attentive Emotion Recognition Network

Modern deep learning approaches have achieved groundbreaking performance...
04/24/2019 ∙ by Harris Partaourides, et al. ∙ 0 ∙ share

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Disturbed YouTube for Kids: Characterizing and Detecting Disturbing Content on YouTube

A considerable number of the most-subscribed YouTube channels feature co...
01/21/2019 ∙ by Kostantinos Papadamou, et al. ∙ 0 ∙ share

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Cross-Device Tracking: Systematic Method to Detect and Measure CDT

Online advertising, the backbone of the free Web, has transformed the ma...
12/29/2018 ∙ by Konstantinos Solomos, et al. ∙ 0 ∙ share

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LOBO -- Evaluation of Generalization Deficiencies in Twitter Bot Classifiers

Botnets in online social networks are increasingly often affecting the r...
09/25/2018 ∙ by Juan Echeverría, et al. ∙ 0 ∙ share

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There goes Wally: Anonymously sharing your location gives you away

With current technology, a number of entities have access to user mobili...
06/07/2018 ∙ by Apostolos Pyrgelis, et al. ∙ 0 ∙ share

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Cookie Synchronization: Everything You Always Wanted to Know But Were Afraid to Ask

User data is the primary input of digital advertising, the fuel of free ...
05/26/2018 ∙ by Panagiotis Papadopoulos, et al. ∙ 0 ∙ share

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Large-Scale Learning from Data Streams with Apache SAMOA

Apache SAMOA (Scalable Advanced Massive Online Analysis) is an open-sour...
05/26/2018 ∙ by Nicolas Kourtellis, et al. ∙ 0 ∙ share

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"You Know What to Do": Proactive Detection of YouTube Videos Targeted by Coordinated Hate Attacks

Over the years, the Web has shrunk the world, allowing individuals to sh...
05/21/2018 ∙ by Enrico Mariconti, et al. ∙ 0 ∙ share

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The Web of False Information: Rumors, Fake News, Hoaxes, Clickbait, and Various Other Shenanigans

A new era of Information Warfare has arrived. Various actors, including ...
04/10/2018 ∙ by Savvas Zannettou, et al. ∙ 0 ∙ share

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A Unified Deep Learning Architecture for Abuse Detection

Hate speech, offensive language, sexism, racism and other types of abusi...
02/01/2018 ∙ by Antigoni-Maria Founta, et al. ∙ 0 ∙ share

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Measuring #GamerGate: A Tale of Hate, Sexism, and Bullying

Over the past few years, online aggression and abusive behaviors have oc...
02/24/2017 ∙ by Despoina Chatzakou, et al. ∙ 0 ∙ share

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VHT: Vertical Hoeffding Tree

IoT Big Data requires new machine learning methods able to scale to larg...
07/28/2016 ∙ by Nicolas Kourtellis, et al. ∙ 0 ∙ share

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Nicolas Kourtellis

Featured Co-authors

Emiliano De Cristofaro

Gianluca Stringhini

Jeremy Blackburn

Savvas Zannettou

Joan Serrà

Mohamed Ali Kaafar

Albert Bifet

Sotiris Ioannidis

Panagiotis Papadopoulos

Ilias Leontiadis

Gianmarco De Francisci Morales

User Tracking in the Post-cookie Era: How Websites Bypass GDPR Consent to Track Users

Under the Spotlight: Web Tracking in Indian Partisan News Websites

FLaaS: Federated Learning as a Service

Not one but many Tradeoffs: Privacy Vs. Utility in Differentially Private Machine Learning

S2CE: A Hybrid Cloud and Edge Orchestrator for Mining Exascale Distributed Streams

I call BS: Fraud Detection in Crowdfunding Campaigns

Catching them red-handed: Real-time Aggression Detection on Social Media

Angry Birds Flock Together: Aggression Propagation on Social Media

Stop Tracking Me Bro! Differential Tracking Of User Demographics On Hyper-partisan Websites

Clash of the Trackers: Measuring the Evolution of the Online Tracking Ecosystem

Measuring ad value without bankrupting user privacy

No More Chasing Waterfalls: A Measurement Study of the Header Bidding Ad-Ecosystem

Detecting Cyberbullying and Cyberaggression in Social Media

Beyond content analysis: Detecting targeted ads via distributed counting

A Self-Attentive Emotion Recognition Network

Disturbed YouTube for Kids: Characterizing and Detecting Disturbing Content on YouTube

Cross-Device Tracking: Systematic Method to Detect and Measure CDT

LOBO -- Evaluation of Generalization Deficiencies in Twitter Bot Classifiers

There goes Wally: Anonymously sharing your location gives you away

Cookie Synchronization: Everything You Always Wanted to Know But Were Afraid to Ask

Large-Scale Learning from Data Streams with Apache SAMOA

"You Know What to Do": Proactive Detection of YouTube Videos Targeted by Coordinated Hate Attacks

The Web of False Information: Rumors, Fake News, Hoaxes, Clickbait, and Various Other Shenanigans

A Unified Deep Learning Architecture for Abuse Detection

Measuring #GamerGate: A Tale of Hate, Sexism, and Bullying

VHT: Vertical Hoeffding Tree