Browser Extensions Sell Streaming Data, Including Ad Blockers: LayerX Report
Research from LayerX identified 82 browser extensions, including ad blockers and streaming tools for platforms like Netflix and Hulu, that explicitly sell or share user data. These extensions collect viewing history, content preferences, and streaming behavior which can be monetized by advertisers and analytics firms. The report highlights privacy risks within the growing ad-supported streaming ecosystem as third-party extensions commercialize user viewing habits.
Key Takeaways
- LayerX analyzed 6,666 browser extension privacy policies, flagging 82 that explicitly allow data sale or sharing.
- Extensions include 'Stands AdBlocker' (3M users) and streaming tools like 'Hulu Ad Skipper' (100K users).
- Collected data includes browsing activity, behavioral profiles, streaming history, and content preferences.
- Many extensions leverage vague language like 'may sell or share' data with 'business partners' for 'commercial purposes'.
- The identified extensions are often from a single publisher network, HideApp LLC, for streaming platforms (Netflix, Hulu, Prime Video).
Why It Matters
The commercialization of user streaming habits by browser extensions introduces a new layer of data privacy risk within the ad-supported video ecosystem. Even tools designed to block ads are funneling user behavior back into the advertising data supply chain. This trend complicates compliance for platforms and advertisers aiming for transparency, as third-party extensions operate outside direct platform oversight. Watch for how browser vendors and streaming platforms respond to these data practices, particularly as demand for user privacy continues to heighten.
Read full article at adguard.com
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