PureBrowser supports collecting telemetry data, and by default uploads such data to Mozilla.
Discussed in detail at [[https://bugzilla.mozilla.org/show_bug.cgi?id=1424781|Mozilla bugtracker]].
1. PureBrowser should be built with support telemetry reporting disabled (by usde of configure flag or patch), or
2. PureBrowser should be packaged with configuration disabling telemetry reporting by default, or
3. PureOS should include in default install a Mozilla addon to disable telemetry reporting to Mozilla.