There are a few automatic connections made to Mozilla servers by products distributed by Mozilla. The are mentioned in the privacy policy: http://www.mozilla.co

There are a few automatic connections made to Mozilla servers by products distributed by Mozilla. The are mentioned in the privacy policy: http://www.mozilla.com/en-US/legal/privacy/firefox-en.html http://www.mozilla.com/en-US/legal/privacy/firefox-en.html And there is a support article with instructions on disabling them: http://support.mozilla.com/en-US/kb/Firefox+makes+unrequested+connections#Auto_update_checking http://support.mozilla.com/en-US/kb/Firefox+makes+unrequeste... Note that these "pings" aren't implemented as "phone home" type tracking. Rather, they are necessary parts of useful features such as automatic update tracking and extension blocklisting.