If you manage to catch Firefox in the act, you might be able to pull out URLs, domains, or maybe just IPs with a network traffic analyzer of some kind. But since the experiment is limited to a few participating advertisers they say, it might be hard to trigger the behavior intentionally until you know what websites trigger the reports.
@sigh_d Sorry, I don't know that one.
If you manage to catch Firefox in the act, you might be able to pull out URLs, domains, or maybe just IPs with a network traffic analyzer of some kind. But since the experiment is limited to a few participating advertisers they say, it might be hard to trigger the behavior intentionally until you know what websites trigger the reports.