UMBRA Artifact Repository

Source Code and Supplementary Materials

1. Ground Truth Dataset/

This directory contains manually annotated labels used to validate and evaluate the accuracy of UMBRA’s detection modules.

The annotations serve as reference ground truth for performance analysis.

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2. Large-Scale-Measurement Dataset/

This directory contains datasets collected from large-scale web crawls. EU/ → European websites (2000) USA/ → United States websites(2000) Tranco-10K/ → Tranco top-ranked websites (10000)

3. Lexicons

This directory provides keyword lists and linguistic indicators used to detect multiple categories of dark patterns, including:

• Cookie information disclosure

• Purpose transparency

• Opt-out pricing

• Legal ambiguity

• These lexicons support the automated text-based detection modules.

• 4. Results_Cookies/Cookie_json/ (Limited)

This directory stores collected cookie records in JSON format.

Each file includes information such as:

• Cookie names and domains
• Expiration times
• Security attributes
• Interaction-dependent changes

These records enable security and privacy risk analysis.

5. Screenshots (Limited)/

This directory contains a limited subset of banner screenshots.

These images are provided for qualitative validation and illustrative purposes. These final images were used by both researchers to annotate the ground-truth dataset.