Third-party tracking cookies are now blocked for all users by default. That would be considered a third-party cookie. Some advertisers use these types of cookies to track your visits to the various websites on which they advertise. If you are concerned about this, you can disable third-party cookies in Firefox.
Microsoft® Edge blocking cookies Windows 10 - Microsoft Aug 02, 2017 How to prevent Google from tracking you - CNET How to prevent Google from tracking you. To ensure that your browsing history isn't shared with online advertisers, use Google's opt-out features or the free Disconnect add-on for Google Chrome Cookie Blocker - Free downloads and reviews - CNET
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Jul 15, 2017 Tracking Cookie Blocker - Free downloads and reviews
Get Ghostery – Privacy Ad Blocker - Microsoft® Store
How to prevent Google from tracking you. To ensure that your browsing history isn't shared with online advertisers, use Google's opt-out features or the free Disconnect add-on for Google Chrome Cookie Blocker - Free downloads and reviews - CNET cookie blocker free download - Cookie Pal, Cookie Crusher, Pop-up Blocker, and many more programs Firefox to Block Third-Party Tracking Cookies by Default Jun 04, 2019 Tracking Cookies FAQ - What Are Tracking Cookies - Tom’s Sep 16, 2013