http://spywareitdaiuyfo2sqb5vsg7mek5cjabdr73luhnda57t2hyuzg7yyd.onion/articles/firefox.html
Allegedly used to protect you from "phishing" websites, but in the end, it makes a bunch of requests to Google every 30 minutes (according to Mozilla), including a POST request with your Firefox version and a unique, persistent, hidden cookie. Since whenever the current URL matches an entry in the cached local blacklist a request is made to Google servers, ostensibly to test whether that website is still on the master online blacklist, it allows Google to monitor specific websites...