By default, Yandex.Metrica collects information about all users who visit a site. However, collecting data about individual users can be blocked with the Yandex.Metrica opt-out.
The Yandex.Metrica opt-out is a browser add-on. It blocks storing cookie files on the user's computer and restricts data transmission to Yandex.Metrica.
To install this add-on, select your browser: