salt water crocodile with gps transmitter on its back (src)

“The word is derived from Greek roots: tele = remote, and metron = measure.”

telemetry is in general about the health of systems but also humans and apparently animals.

what are all those thunderbird “telemetry pings” about?

example data can be found in your thunderbird profile folder: /home/user/thunderbird-profile/saved-telemetry-pings

example data: d74742f5-1b8e-45e8-858d-1bec316a39bf.txt

stuff like:


“It’s helpful for Mozilla’s engineers and decision-makers to be able to measure how Firefox behaves in the real world. The Telemetry feature provides this capability by sending performance and usage info to Mozilla. As you use Firefox, Telemetry measures and collects non-personal information, such as performance, hardware, usage and customizations. It then sends this information to Mozilla on a daily basis and we use it to improve Firefox.” (src)


Migrate to LibreFox?

  • Updated browser: because this project is not a fork, it is kept updated with the latest Firefox version.
  • Extensions firewall: limit internet access for extensions (firewall-test-feature)
  • IJWY (I Just Want You To Shut Up): embedded server links and other calling home functions are removed (zero unauthorized connection by default).
  • User settings updates: gHacks/pyllyukko base is kept up to date.
  • Settings protection: important settings are enforced/locked within mozilla.cfg and policies.json, those settings cannot be changed by addons/updates/Firefox or unwanted/accidental manipulation; To change those settings you can easily do it by editing mozilla.cfg and policies.json.
  • Librefox-addons: set of optional Librefox extensions
  • Statistics disabled: telemetry and similar functions are disabled
  • Tested settings: settings are performance aware
  • ESR and Tor version (Librefox TBB Beta)
  • Tor Librefox-addons: adapted Librefox extensions for TBB
  • Multi-platform (Windows/Linux/Mac/and soon Android)
  • Dark theme (classic and advanced)
  • Recommended and code reviewed addons list
  • Community-Driven
  • And much more…



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