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LinkedIn is searching your browser extensions

browsergate.eu

71–80 of 836 posts

Re: LinkedIn is searching your browser extensions

#71
If they are genuinely only using the information to detect bad actors and maintain site stability as the affidavit states, and if they can prove it, this seems like potentially a non-issue?

I am not a lawyer, but site stability seems like a GDPR "Legitimate Interest" in my book anyway.

Re: LinkedIn is searching your browser extensions

#74
This is result of browser fingerprinting.

My guess, Linkedin is used for years as source of valuable information for phishing/spear-phishing.

Maybe their motive is really spying. But more important for them is to fight against people botting Linkedin.

Imho, browser fingerprinting should be banned and EU should require browser companies to actively fight against it, not to help them (Fu Google)

Re: LinkedIn is searching your browser extensions

#75

The “how it works” page suggests it only works on chrome based browsers. Anyone able to determine if firefox or safari are affected too?

> The “how it works” page suggests it only works on chrome based browsers. Anyone able to determine if firefox or safari are affected too?

The code filters out non-chrome browsers: >The extension scan runs only in Chrome-based browsers. The isUserAgentChrome() function checks for “Chrome” in the user agent string. The isBrowser() function excludes server-side rendering environments. If either check fails, the scan does not execute.

Re: LinkedIn is searching your browser extensions

#76
post #44

why would the browser ever expose extensions api to a web page. does firefox does this as well?

> Every time you open LinkedIn in a Chrome-based browser, LinkedIn’s JavaScript executes a silent scan of your installed browser extensions. It's not clear though, either they only tested against chrome-based browsers or Firefox isn't enabling them to do so. edit: I answered before I go fully through the article but it does say it's only Chrome based. > The extension scan runs only in Chrome-based browsers. The isUse…

What is a Chrome-based browser? Isn't Chrome Google's Chromium based browser? How many are based on Chrome?

Re: LinkedIn is searching your browser extensions

#78
post #44

why would the browser ever expose extensions api to a web page. does firefox does this as well?

> Every time you open LinkedIn in a Chrome-based browser, LinkedIn’s JavaScript executes a silent scan of your installed browser extensions. It's not clear though, either they only tested against chrome-based browsers or Firefox isn't enabling them to do so. edit: I answered before I go fully through the article but it does say it's only Chrome based. > The extension scan runs only in Chrome-based browsers. The isUse…

Firefox uses UUID for the local extension url per extension so you can't search for hardcoded local urls.

Re: LinkedIn is searching your browser extensions

#79
post #51
post #22

Earlier quoted context omitted.

Still pretty annoying browsers haven't patched that yet.

There's nothing to patch, scanning is not possible. It's either the extension's choice to become detectable ("externally_connectable" is off by default) or it makes unique changes to websites that allow for its detection.

If it were just a matter of detecting changes to the DOM then this could only detect extensions that alter the LinkedIn website itself. I agree that would be much harder to make undetectable, but this seems like it goes beyond that.

Re: LinkedIn is searching your browser extensions

#80
post #53

Earlier quoted context omitted.

I disagree, I think we should push back hard on behavior like this. What business is it of LinkedIn's what browser extensions I have installed? I think the framing for this is appropriate.

Why is it possible for a web site to determine what browser extensions I have installed? If there are legitimate uses, why isn't this gated behind a permission prompt, like things like location and camera?

This, to me, seems like the more salient point. A headline like “Major browsers allow websites to see your installed extensions” seems more appropriate here.

We’ve known for a long time that advertisers/“security” vendors use as many detectable characteristics as possible to constrict unique fingerprints. This seems like a major enabler of even more invasive fingerprinting and that seems like the bigger issue here.

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