Google announced about changing plans for termination in Chrome support for third-party cookies Issued when accessing sites other than the domain of the current page. Such cookies are used to track user movements between sites in the code of advertising networks, social networking widgets and Web-analytics systems.
Initially, third-party cookies in Chrome was planned stop up 2022, but now this time will shift at least one and a half years, since the introduction of replacement by third-party cookie requires more time than expected. Until the end of 2022, it is planned to complete testing of technologies going to change tracking cookies and activate them in Chrome, after which it is to provide advertising networks and sites at least 9 months to migrate their systems, observation of work and publication of comments. In the middle of 2023, a gradual disabling support for third-party cookies in Chrome will begin, which will be stretched for three months.
Changes are progressing as part of the Privacy Sandbox , aimed at achieving a compromise between the needs of users to maintain the confidentiality and the desire of advertising networks and sites to monitor visitors preferences. Instead of tracking cookies, to determine the interests of a user without confidentiality, it is proposed to use the product floc (Federated Learning of Cohorts), which allows you to highlight users of users with Similar interests, not identifying individual users.
FLOC test introduction in Chrome caused resistance to the community and criticism related to the fact that FLOC does not solve all problems and creates new risks, such as creating conditions for user discrimination and the appearance of an additional factor for hidden identification and tracking user movements. Opinion Mozilla FLOC technology requires refinement and in the current form of its mass introduction to considerable risks .