I wonder how much of that is from Linkedin checking what browser extensions you have, probably desperately trying to prevent screen scraping?

https://news.ycombinator.com/item?id=46904361

That code is minimal. It’s definitely not the source.

Given all the sales and recruiting spam I get, I think it’s a good thing that LinkedIn is making efforts to detect people using garbage plugins that scrape data and send it to their servers or prepare it for mass spamming.

Really? Then why else do adblockers seem to take up so much memory, other than an arms race with countermeasures that sites take?