Using Salient Object Detection to Identify Manipulative Cookie Banners that Circumvent GDPR

Fuente: arXiv
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Autori principali: Grossman, Riley, Smith, Michael, Borcea, Cristian, Chen, Yi
Natura: Preprint
Pubblicazione: 2025
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author Grossman, Riley
Smith, Michael
Borcea, Cristian
Chen, Yi
author_facet Grossman, Riley
Smith, Michael
Borcea, Cristian
Chen, Yi
contents The main goal of this paper is to study how often cookie banners that comply with the General Data Protection Regulation (GDPR) contain aesthetic manipulation, a design tactic to draw users' attention to the button that permits personal data sharing. As a byproduct of this goal, we also evaluate how frequently the banners comply with GDPR and the recommendations of national data protection authorities regarding banner designs. We visited 2,579 websites and identified the type of cookie banner implemented. Although 45% of the relevant websites have fully compliant banners, we found aesthetic manipulation on 38% of the compliant banners. Unlike prior studies of aesthetic manipulation, we use a computer vision model for salient object detection to measure how salient (i.e., attention-drawing) each banner element is. This enables the discovery of new types of aesthetic manipulation (e.g., button placement), and leads us to conclude that aesthetic manipulation is more common than previously reported (38% vs 27% of banners). To study the effects of user and/or website location on cookie banner design, we include websites within the European Union (EU), where privacy regulation enforcement is more stringent, and websites outside the EU. We visited websites from IP addresses in the EU and from IP addresses in the United States (US). We find that 13.9% of EU websites change their banner design when the user is from the US, and EU websites are roughly 48.3% more likely to use aesthetic manipulation than non-EU websites, highlighting their innovative responses to privacy regulation.
format Preprint
id arxiv_https___arxiv_org_abs_2510_26967
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Using Salient Object Detection to Identify Manipulative Cookie Banners that Circumvent GDPR
Grossman, Riley
Smith, Michael
Borcea, Cristian
Chen, Yi
Computers and Society
Artificial Intelligence
Computer Vision and Pattern Recognition
Human-Computer Interaction
The main goal of this paper is to study how often cookie banners that comply with the General Data Protection Regulation (GDPR) contain aesthetic manipulation, a design tactic to draw users' attention to the button that permits personal data sharing. As a byproduct of this goal, we also evaluate how frequently the banners comply with GDPR and the recommendations of national data protection authorities regarding banner designs. We visited 2,579 websites and identified the type of cookie banner implemented. Although 45% of the relevant websites have fully compliant banners, we found aesthetic manipulation on 38% of the compliant banners. Unlike prior studies of aesthetic manipulation, we use a computer vision model for salient object detection to measure how salient (i.e., attention-drawing) each banner element is. This enables the discovery of new types of aesthetic manipulation (e.g., button placement), and leads us to conclude that aesthetic manipulation is more common than previously reported (38% vs 27% of banners). To study the effects of user and/or website location on cookie banner design, we include websites within the European Union (EU), where privacy regulation enforcement is more stringent, and websites outside the EU. We visited websites from IP addresses in the EU and from IP addresses in the United States (US). We find that 13.9% of EU websites change their banner design when the user is from the US, and EU websites are roughly 48.3% more likely to use aesthetic manipulation than non-EU websites, highlighting their innovative responses to privacy regulation.
title Using Salient Object Detection to Identify Manipulative Cookie Banners that Circumvent GDPR
topic Computers and Society
Artificial Intelligence
Computer Vision and Pattern Recognition
Human-Computer Interaction
url https://arxiv.org/abs/2510.26967