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Disable system addons #419
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Thanks for reporting this. What about the |
toolkit.telemetry.coverage.opt-out is specific to the Telemetry Coverage addon and "does not exist by default and must be created, if set to true then the extension should not send a payload as above for users in the 1% sample (such as the Telemetry client ID above will be)" (source) |
Ok. Makes sense. |
Apparently Mozilla devs now claim these addons are...
source: https://old.reddit.com/r/firefox/comments/9ii8sj/firefox_keeps_silently_installing_hidden/ |
I don't trust them anymore, so I'm opting out. |
Mozilla silently distributed the Telemetry Coverage extension to 1% of Firefox users, collecting limited "anonymous" data even when the telemetry prefs are disabled.
To prevent these experiments in the future it could be a good idea to do this:
user_pref("extensions.systemAddon.update.url", "");
user_pref("extensions.systemAddon.update.enabled", false);
and also emptying the features subdir in the profile directory.
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