[avastel]

I wrote a blog post recently about the technique used by LinkedIn to do extension probing, as well as other ways to do it with less side effects

https://blog.castle.io/detecting-browser-extensions-for-bot-...

[direwolf20]

Patch Firefox so navigator.webdriver is always false, then remote control it. Seems not easily detectable. You could still watch for fast input patterns...

[pests]

Nice write up, definitely exactly this.