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The problem is when site1.com is Twitter, and site2.com includes a Twitter button, then Twitter can see that you are browsing site2.com

• alkonaut 10y ago
  Ok - I'm happy to break all such functionality by refusing the use of those cookies. I'm almost sure Ghostery already does this. Is there no legit/useful use for this (I don't count fb auth or like/tweet buttons)?
  • jakobegger 10y ago
    Ghostery blocks specific well known trackers. An approach like Container Tabs would prevent these types of tracking in principle. Valid use for 3rd party cookies is something like single sign on. (Eg. sign into all Google services at the same time, even though they use separate domains)
  • 0xffff2 10y ago
    All you have to do to block this is disable third party cookies. I did this years ago and for my usage I've never even noticed.