One easy way to check is to visit a browser’s content setting page and privacy policy. The privacy webpage should outline if your data is shared and why. It’s why the <a href="{ $privacy }">{ -brand-name-firefox } privacy notice</a> is easy to read and easy to find.
Abrid fessusen akken ad twaliḍ d tirza ɣer usebter n yiɣewwaṛen n ugbur n yiminig akked tsertit tabaḍnit. Asebter web n tbaḍnit yessefk ad yesken ma yella isefka-ik ttwabḍan daɣen acuɣer. Ɣef waya <a href="{ $privacy }">tasertit tabaḍnit n { -brand-name-firefox }</a> fessuset i tɣurin daɣen i tifin.