Cookies are one of the techniques available to websites for the incorporation of persistent state. Throughout the years, however, their abilities have developed and matured with some daunting issues of legacy. Browsers (including Chrome, Firefox, and Edge) are modifying their actions to introduce more privacy-preserving defaults to fix that. Difference between First and Third-party Cookies Here are mainly 3 differences between a first and third-party cookie as explained below: Setting the Cookie First-party cookies are set via the web server of the publisher, or any JavaScript loaded on the website. Third-party cookies can be configured via a third-party server, using the code loaded on the website of the publisher. Cookie Availability First-party cookies are accessible to the domain where they were developed. A third-party cookie is available on any website which loads the code of the third party server. Browser Support/Blocking First-party cookies are accepted by all browsers, and the user can block or uninstall them. Third-party cookies are supported by all browsers; however, by default, many block third party cookies from being generated. Users often take matters into their own hands and remove cookies from third parties on their own. Why You Should Not Avoid the Not Secure Warning in Chrome Google Chrome can label non-secure web pages that contain password & credit card input fields as Not Safe in the URL bar. The Developer Tools console displays the message when the Not Secure state is shown. For a non-secure context, this page contains a password or credit card entry. An alert was attached to the bar with the URL. Of all pages served over HTTP, Chrome will show a Not Safe alert, regardless of whether the site contains sensitive input fields. Also if as described above you want to pursue more oriented resolutions, you need to upgrade the website to use HTTPS for all web pages.