Many things on the internet are tracked and sometimes sold by different groups of people.
For example:
Your internet provider can see the names of the websites you go to (for example: Wikipedia), if the website uses HTTPS. If a website uses HTTP your internet provider can see the exact page you're in (for example: Privacy page on Wikipedia) and things you write in that website (Like your password).[2][better source needed] This is why HTTPS is considered by web browsers as safe but HTTP is not. HTTPS in a browser's address bar
Google tracks and stores data created by the Google searches you make[a], the emails sent from and to Gmail addresses, on all websites you visit that use Google Analytics, and more.[3][4]
TikTok collects and shares location data, sees private messages, sells your personal information to others, and more.[5][6]
The senders of an email can track the time you open an email using pictures that sometimes can't even be seen.
Notes
↑Google Search receives everything you type in the bar on their website (google.com) and in most cases your browser's address bar, so they can give you search suggestions. It is unknown if they store this data.
References
↑Universal Declaration of Human RightsArticle 12 No one shall be subjected to arbitrary interference with his privacy, family, home or correspondence, nor to attacks upon his honour and reputation. Everyone has the right to the protection of the law against such interference or attacks.
