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Is Nielsen Extension safe?

This security report analyses whether Nielsen Extension is safe to install on your browser. We check Nielsen Extension for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if Nielsen Extension is safe for your personal or enterprise fleet.

Medium risk

Nielsen panel tracking extension that collects extensive browsing data (URLs, page titles, video viewing, HTTP headers, keystrokes, mouse activity) and transmits it to Nielsen servers. Disclosed data collection for market research panelists only, but has postMessage listener without origin validation.

v5.0.4106Chrome Web Store
45Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 10 April 2026bpgmmbefnahabhcchpfkobeindpppflc

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