Google has been doing since June ’16, the one thing they said they would not do “users’ personally identifiable information from Gmail, YouTube and other accounts has been merged with their browsing records from across the web.” Google “had previously pledged to keep these two data sets separate to protect individuals’ privacy, but updated its privacy settings in June to delete a clause that said “we will not combine DoubleClick cookie information with personally identifiable information unless we have your opt-in consent”.

Make sure you go to https://myaccount.google.com/activitycontrols to control the way Google follows you or switch to the DuckDuckGo https://duckduckgo.com/ non-tracking search..

Check the full story at The Guardian.