Since this is being posted fucking everywhere with the same sensational headline that makes it look like linkedin is jumping out of the browser to scan your actual filesystems, here's an exerpt from the site linked:

The Attack: How it works
Every time you open LinkedIn in a Chrome-based browser, LinkedIn’s JavaScript executes a silent scan of your installed browser extensions. The scan probes for thousands of specific extensions by ID, collects the results, encrypts them, and transmits them to LinkedIn’s servers. The entire process happens in the background. There is no consent dialog, no notification, no mention of it in LinkedIn’s privacy policy.

It's enumerating the browser extensions you have installed.

LinkedIn loads an invisible tracking element from HUMAN Security (formerly PerimeterX), an American-Israeli cybersecurity firm, zero pixels wide, hidden off-screen, that sets cookies on your browser without your knowledge. A separate fingerprinting script runs from LinkedIn’s own servers. A third script from Google executes silently on every page load. All of it encrypted. None of it disclosed.

Can’t uBO block this with custom filters?

Do browsers actually allow code execution which can provide a list of installed programs?

I'd like to know how this functions because if MS is doing it than others are as well. Metadata in your browser is one thing but being able to see past that is unacceptable.

LinkedIn breaks the law without consequence all the fucking time. See their un-unsubscribable emails.

So is there a way to restrict this for LinkedIn or any other site for that matter?

No, I don’t think they are.

Not mine

you mean microslop