Category Examples Sources 1.Identifiers Email address, Internet Protocol address, Device ID Directly from the user or (in the case of Internet Protocol address) indirectly from the user’s activity 2. Internet / other network activity User agent, Domain name, browser and OS information, extension version, extension name, visited URLs, referring URLs, user activity on landing page(eg. impressions, clicks, installs, uninstalls, search), date and time for these interactions, install date, etc Directly from the user and/or indirectly from the user’s activity 3.