Firefox-based browsers not affected.

Hmm I opened linkedin in Firefox and ublock origin showed it blocked 4 items... then switched away and back and the counter was up to 12.

Is that enough blocking, I wonder?

Firefox uses randomised IDs for installed extensions, so the method highlighted won't work on Firefox. That's not to say they aren't trying other methods on Firefox.

Attack surface is narrower on Firefox. WebExtensions without DOM-visible traces cannot be detected.

> 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.