Privacy

Thanks for the feedback. You’re right, it’s really just scanning for known extension IDs, not poking around your entire computer. Saying “computer scan” might sound a bit dramatic, but the privacy risk is still pretty serious given what info they can guess from those extensions.

About the home lab and network side — I get that LinkedIn isn’t scanning your whole network or anything. What I meant is more about how you can block or filter those sneaky requests at the network level, like with DNS blocking or firewall rules, so they never even get sent out. It’s not a classic home lab threat, but if you’re running your own DNS or network filters, it’s a handy extra layer to keep things tighter.

Sure, switching browsers or faking your user agent works too, but not everyone wants to give up Chromium or LinkedIn completely. That’s why I mentioned a few different ways to protect yourself.

Appreciate the note on wording — I just wanted to show why this isn’t just some minor browser oddity and why it’s worth thinking about from a privacy and network defence angle.

How do you DNS block a URL :)

Mostly, yes. Firefox doesn't use the specific Chromium internal resource API that LinkedIn is exploiting for this. However, since the script relies on hidden GET requests, I still recommend Multi-Account Containers to isolate LinkedIn entirely, plus a custom uBlock Origin filter just to be sure.

Or if you change your useragent to anything other than chrome/chromium related as it only runs on detected chromium browsers.

It only checks browser addons/extensions. The title isnt accurate.

Spot on. If you can see a user has certain VPN clients, IDEs, or specific advocacy tools installed, you've essentially built a psychological profile of an employee’s home environment without them ever clicking 'Accept'. It’s a massive GDPR Article 9 violation (Special Category data) hidden in plain sight.