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Networks of Browser Extensions Are Spyware in Disguise 
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Networks of Browser Extensions Are Spyware in Disguise 

Modern browser extensions and ad blockers are legally collecting and reselling user data, including streaming habits and B2B sales intelligence, under the guise of “analytics.” This unregulated “legal spyware” creates massive security gaps as employees unwittingly leak corporate URLs, SaaS dashboards, and research activity to third-party databases. With the rise of AI-native browsers and personal device syncing, security leaders must evolve beyond simple permission checks to implement rigorous extension governance and privacy policy reviews to prevent targeted attacks and corporate data leakage.

First seen on securityboulevard.com

Jump to article: securityboulevard.com/2026/05/networks-of-browser-extensions-are-spyware-in-disguise/

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