this post was submitted on 30 Apr 2026
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Microsoft is running one of the largest corporate espionage operations in modern history.

Every time any of LinkedIn’s one billion users visits linkedin.com, hidden code searches their computer for installed software, collects the results, and transmits them to LinkedIn’s servers and to third-party companies including an American-Israeli cybersecurity firm.

The user is never asked. Never told. LinkedIn’s privacy policy does not mention it.

Because LinkedIn knows each user’s real name, employer, and job title, it is not searching anonymous visitors. It is searching identified people at identified companies. Millions of companies. Every day. All over the world.

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[–] GreenShimada@lemmy.world 140 points 2 months ago* (last edited 2 months ago) (8 children)

This is straight up misinformation. First off, it's perfectly legal.

LinkedIn does browser fingerprinting. It's the same thing Google and Meta do. It's how Google Ads is shifting to a post-adblocker revenue stream.

Browser fingerprints show fonts used, audio codecs, WebGL render data, processor, operating system - enough that if you add up several factors together, it makes a statistically unique fingerprint. it does NOT scan applications on your computer. It can't. It DOES scan which browser extensions you have running (if they affect page loading).

If you check your email and then close that and go to Google in an incognito window and search for porn - Google will fucking know what you're looking at. Gmail and all Google apps all fingerprint, and then you'll notice how Google ads trackers are on most sites online? Yep. That's how they track you.

Use a VPN? Use an ad blocker? Great - Google doesn't care. Google can track your fingerprint.

See your own fingerprint - check how it know it's you visit after visit.

https://fingerprint.com/

https://coveryourtracks.eff.org/

https://amiunique.org/

[–] inlandempire@jlai.lu 41 points 2 months ago (2 children)

it does NOT scan applications on your computer

technically browser extensions are considered applications under EU's GDPR

It DOES scan which browser extensions you have running (if they affect page loading).

as per their report:

Why two detection methods

Method Technique What it catches
AED fetch() against known resource paths Extensions that are merely installed, even if they inject nothing into the current page
Spectroscopy Full DOM tree walk Extensions that actively modify the page, even if they are not in LinkedIn’s hardcoded list
[–] Alberat@lemmy.world 15 points 2 months ago (1 children)

it's misleading to say its searching your computer tho...? this invokes the thought of LinkedIn getting to rifle through your files like it has access to ~/Documents/ or smth.

but yeah tracking you over the internet is similarly bad

[–] stroz@infosec.pub 8 points 2 months ago (2 children)

it's misleading to say its searching your computer tho...?

Wait, your browser extensions aren't on your computer?

[–] Armok_the_bunny@lemmy.world 12 points 2 months ago

It's misleading because saying "search the computer" implies a breadth of scan that isn't present. That's like saying a website "searches the computer" to grab cookies generated by that site; technically true but worded to be misleading.

To be clear this is bad, but it's important to be clear when explaining why it is bad to avoid creating resentment when the person you are explaining it to looks deeper into it themself and finds that it's not as bad as your explanation was implying.

[–] partofthevoice@lemmy.zip 1 points 2 months ago* (last edited 2 months ago) (1 children)

I believe the point they’re trying to make is that they have access to APIs which describe particular software on your PC. You can argue based on the fact that, yes, the software is persisted on your filesystem. However, the API they access brokers [meta]data about the software. It’s not a filesystem API. If I add arbitrary files to an extension directory under my browsers path for extension persistence, they probably cannot see those arbitrary files unless the extension is built to allow it.

There is a big difference between having direct and broad read access to the filesystem, versus the much smaller volume of data they can infer about your filesystem using APIs for browser extension data.

[–] FooBarrington@lemmy.world 2 points 2 months ago

There isn't an API for browser extension data. They are searching for the existence of thousands of specific addresses to perform the search.

[–] GreenShimada@lemmy.world 1 points 2 months ago

While browser extensions are considered apps under the GDPR, the headline is intentionally misleading. LinkedIn isn't "Illegally Searching your Computer." It's asking the browser for all the info it's maximally able to give up. We do need to define browser extensions in a way that doesn't use fear as clickbait to make it sound like LinkedIn has greater access to a device than it really has.

And thanks for the correction on AED, I had seen another analysis a couple weeks back and I didn't recall correctly what was being collected.

[–] Bloefz@lemmy.world 18 points 2 months ago (1 children)

They also scan for thousands of extensions. The only reason it doesn't do this on Firefox is that Firefox randomises the uuid of extensions every time. Chrome doesn't.

[–] grrgyle@slrpnk.net 2 points 2 months ago

Oh so that's what that annoying feature is about. I'm sorry I ever thought it was annoying uuid fetishism. I was wrong

[–] SnotFlickerman@lemmy.blahaj.zone 11 points 2 months ago

I think the argument is that since some of the extensions that are probed can be political in nature, which can reveal political identity, which is potentially unlawful in the EU. However, it really needs to be up to a judge to make a decision on that.

In general what they're doing is legal, and the BrowserGate people are using niggling little details, a handful of extensions out of the 6000 probed, to justify this argument. I couldn't say, especially as someone from outside the EU, whether this is actually illegal or not, but it's definitely in a nebulous area at the moment.

Though I agree it's sensationalized in terms of claiming it's "searching your computer" and doing "corporate espionage."

[–] merdaverse@lemmy.zip 10 points 2 months ago

There is literally a section called Why it's illegal.

LinkedIn’s scan reveals the religious beliefs, political opinions, disabilities, and job search activity of identified individuals. LinkedIn scans for extensions that identify practicing Muslims, extensions that reveal political orientation, extensions built for neurodivergent users, and 509 job search tools that expose who is secretly looking for work on the very platform where their current employer can see their profile.

Under EU law, this category of data is not regulated. It is prohibited. LinkedIn has no consent, no disclosure, and no legal basis. Its privacy policy does not mention any of this.

[–] PumaStoleMyBluff@lemmy.world 10 points 2 months ago (2 children)

Fonts, codecs, hardware, OS, extensions are all parts of a computer that never ever need to be transmitted to a website for it to function. Any information about them should be sandboxed, and if the website wants to display differently based on them, it can send static data or code in and get nothing back out.

[–] jtrek@startrek.website 9 points 2 months ago (1 children)

I'm pretty sure for fonts they can tell because they have different widths, which affects page layout, which can be measured.

There's a lot of stuff like that.

Best would be make it illegal and give the law teeth. Solving it technically will always be an arms race.

[–] PumaStoleMyBluff@lemmy.world 2 points 2 months ago (1 children)

Yeah, they can very easily get all of that right now. But functionally there's no good reason for any browser to let them. Page layout should be a one-way operation that doesn't allow information back through.

[–] jtrek@startrek.website 4 points 2 months ago (2 children)

You'd have to kill a lot of JavaScript and CSS for that to work, and then a lot of legitimate function goes away.

Done much web development work?

[–] PumaStoleMyBluff@lemmy.world 2 points 2 months ago* (last edited 2 months ago) (1 children)

You don't have to kill much functionality at all. Scripts that need to access that data should simply live in a sandbox with no network access. They can still do full computational layout.

I have done exclusively web development work.

[–] jtrek@startrek.website 1 points 2 months ago (1 children)

So you're going to make it illegal to call getBoundingClientRect and then pass that information to fetch through any mechanism?

[–] PumaStoleMyBluff@lemmy.world 1 points 2 months ago* (last edited 2 months ago)

Essentially yes. Basically, think of two JS sandboxes that can manipulate the same DOM. One can make requests, but cannot retrieve local layout data. The other can get layout data, but not make requests. Both can set layout data.

Web developers can use the former 99% of the time, and the latter for more precise work.

[–] partofthevoice@lemmy.zip 1 points 2 months ago* (last edited 2 months ago) (1 children)

Surely functionality affecting display can be standardized to the point of making them useless for fingerprints? I don’t really care what font my browser uses, as long as I don’t notice it. Similarly, other details should either be randomized, mocked, jittered, or outright blocked. Fingerprinting only works because they’re operating in a rather non-adversarial space. The weakness with their current approach is the huge set of variables, which I’m sure we can leverage to reduce the algorithms determinism.

We can either all appear the same, or appear completely unique every time. Either approach should work.

[–] jtrek@startrek.website 1 points 2 months ago

I don't know a lot about how fingerprinting works, but some of what i've read is pretty insidious. Some things could probably be obfuscated, but some of what the trackers use has legitimate purposes as well. Your application may serve different content based on the screen size, or fall back to an older library if such-and-such API isn't supported.

Personally I'd rather make targeting advertising and tracking illegal, and gut the whole thing to avoid the arms race.

[–] GreenShimada@lemmy.world 1 points 2 months ago

It depends on the website, but LinkedIn certainty doesn't need full fingerprint data to operate correctly. Most privacy-respecting browsers either mask or spoof the data already.

[–] Akh@lemmy.world 9 points 2 months ago

Yeah but still sick of this shit

[–] Crackhappy@lemmy.world 4 points 2 months ago

Well that was very interesting. I wasn't planning to cover my tracks, but apparently I am.

[–] Steve@startrek.website 4 points 2 months ago (2 children)
[–] Enkers@sh.itjust.works 1 points 2 months ago (2 children)

I have NoScript for JS tracking, but what do you use for fingerprint randomisation?

[–] crimson_iris@piefed.social 4 points 2 months ago (1 children)
[–] rants_unnecessarily@piefed.social 3 points 2 months ago (2 children)

I'm using canvas blocker and I'm still getting "Your browser has a unique fingerprint"

What am I missing?

[–] INeedMana@piefed.zip 1 points 1 month ago (1 children)

I know that in Threadiverse 2 weeks is a very long time but I just checked out CanvasBlocker and for a moment I had a similar question

On the page of CanvasBlocker addon there is a link to https://browserleaks.com/canvas.
And once I installed the addon, the page started saying Uniqueness: 100% (The signature is unique to our database) which sounds bad. But if you refresh the page, you can see that the Signature changes everytime. And I think this is the core, everytime a page tries to fingerprint my canvas, it will get a different signature. Every time I open a page, from canvas vector, I will look like a different viewer

Right, I see now. Thanks for the reply!

[–] crimson_iris@piefed.social 1 points 2 months ago (1 children)

I'm not sure, but I believe PumaStoleMyBluff's reply may describe the issue.

[–] rants_unnecessarily@piefed.social 1 points 2 months ago (2 children)

Your link just opens this whole thread for me.
Is there something wrong on my end (using Summit app) or is your link broken?

[–] crimson_iris@piefed.social 1 points 2 months ago

Sorry, I'm pretty new to the Fediverse, so I probably did it wrong. Hoping someone will correct me, but in the mean time I'll quote the person whose comment I meant to link to:

Some of the test sites don’t differentiate between random and unique. They may see a randomized fingerprint as a plausible unique user, but it may be different the next time you visit. Other sites may detect that your browser has taken steps to randomize your fingerprint, and use that as an identifying piece of information on its own (power user vs average joe)

[–] Steve@startrek.website 2 points 2 months ago (1 children)

I made no effort to do that, im using the duckduckgo browser on my phone.

[–] status_sphere@sh.itjust.works 2 points 2 months ago (2 children)

Interesting, I also have the DDG browser but the test shows a unique fingerprint result. I don't think that I have tinkered with any settings and I haven't installed addons.

[–] PumaStoleMyBluff@lemmy.world 5 points 2 months ago

Some of the test sites don't differentiate between random and unique. They may see a randomized fingerprint as a plausible unique user, but it may be different the next time you visit. Other sites may detect that your browser has taken steps to randomize your fingerprint, and use that as an identifying piece of information on its own (power user vs average joe)

[–] Steve@startrek.website 2 points 2 months ago* (last edited 2 months ago) (1 children)

Correction- the first test was the browser inside the lemmy voyager app, not sure what its based on. This one is out of the DDG app;

[–] WhyJiffie@sh.itjust.works 1 points 2 months ago

the browser in voyager is probably your default browser over customtabs

[–] GreenShimada@lemmy.world 1 points 2 months ago