Sure, but I assume Mozilla doesn't recognize the Lenovo adware, so if all the web traffic is being routed through this proxy, shouldn't firefox have squawked?
https://bugzilla.mozilla.org/show_bug.cgi?id=1134506
Down around 0200 PST 2015-02-19
EDIT: credit
[1] cpeterso https://news.ycombinator.com/item?id=9072642
I guess Firefox should block that plugin as malicious.