[notakio]

Besides lsof and netstat?

[cced]

Can you expand on this? Do they package those and use them with chrome? How are they using them?

[notakio]

I simply meant that if you monitor a given application using on-system network tools, you quickly get an accurate idea of what/who that application talks to. And browsers are super-chatty to all sorts of destinations that are not immediately apparent to an end user who is just clicking around the web.