Firefox browser added a special σελίδα which allows users to view the telemetry data that Mozilla collects from the browser.
You can see the new addition from the inside address: about: telemetry.
Η σελίδα εμφανίζει λεπτομερείς τεχνικές πληροφορίες για τις ρυθμίσεις του προγράμματος περιήγησης, τα εγκατεστημένα πρόσθετα, πληροφορίες του λειτουργικού συστήματος-hardware, περιόδους modeof the application and the processes being performed.
The information collected is what one would expect a software developer to collect from users, in order to be able to more easily correct any errors and to have some statistics of the users of the application.
The page was created primarily to help engineers find bugs, but has been established and opened to everyone to show users the type of data collected by the company.
Note that before adding the new feature to Firefox, the company appeared on a website of all types of telemetry data it collects from users and the reasons why it collects them.
But in addition to the page above, Firefox has one web portal, which presents weekly statistics data using Firefox.
However, if you feel uncomfortable with the data collected by Mozilla you can turn off Firefox telemetry from the internal address about: preferences # privacy in the "Firefox Data Collection and Use" section
It all started with new version of the browser released on January 7th.