This type of "spying" has been going on for a long long time [1]. It's just that people have conveniently ignored it, and the companies that use this data have

This type of "spying" has been going on for a long long time [1]. It's just that people have conveniently ignored it, and the companies that use this data have not been outed. See SimilarWeb, Jumpshot and other clickstream companies that buy Google extensions and keep track of every single URL you visit. [1] https://www.howtogeek.com/180175/warning-your-browser-extensions-are-spying-on-you/ https://www.howtogeek.com/180175/warning-your-browser-extens...