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🫆Browser Extension Fingerprinting on LinkedIn?

Written by Arlo Gilbert | Apr 9, 2026 12:15:00 PM

Hello all, and happy Thursday!

One of our stories this week centers on a report allegedly uncovering LinkedIn’s secret scanning of your browser extensions (hello to our LinkedIn readership).

The report claims LinkedIn injects a script that scans for the fingerprints of over 6,000 browser extensions, then connects those to the individual users, and then the businesses those individuals work at. In this way, Microsoft can ID businesses using tools that compete with its own, incidentally collecting whatever information extensions also reveal along the way (or so the report claims).

LinkedIn doesn’t deny that it scans for browser extensions; rather, it insists this scanning is done to detect extensions that themselves scrape data from users’ profile. The privacy violations alleged in the report, according to LinkedIn, are actually misconstrued privacy protections. LinkedIn also notes that the report authors hold a grudge against the platform over an account restriction that was upheld by a German court.

True or not, the allegations have already spurred two class action lawsuits out of California, and because LinkedIn is regulated as a “gatekeeper” under EU law, the report authors have filed a preliminary injunction against LinkedIn for DMA violations.

Best,

Arlo

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