Authors: Minjun Long, David Evans

Published on: May 13, 2024

Impact Score: 7.6

Arxiv code: Arxiv:2405.08102

Summary

• What is new: This research is one of the few studies to analyze the effectiveness of the Privacy Sandbox’s Protected Audience in preventing request linking, an aspect previously not extensively examined.
• Why this is important: The problem being addressed is the potential for linkage privacy risks in Google’s Privacy Sandbox initiative, specifically in the PrAu proposal designed for online remarketing without third-party cookies.
• What the research proposes: The proposed solution involves a detailed analysis of the PrAu workflow and its associated privacy mechanisms to identify potential vulnerabilities where an adversary could link user requests across different sites.
• Results: The study found that despite the privacy measures implemented in PrAu, a realistic adversary can still potentially link user requests and conduct mass surveillance.

Technical Details

Technological frameworks used: Privacy Sandbox

Models used: Protected Audience (PrAu) proposal

Data used: Hypothetical user data and adversary models to simulate request linking scenarios.

Potential Impact

Digital marketing industries, online advertising firms, and companies relying on targeted advertising technologies could be impacted.

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