ASP.NET_SessionId - Used to store a unique identifier for user session
__RequestVerificationToken_<dynamic_part> - Used to store anti forgery token. This token prevent CSRF attack. For more information please read: https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF). The "<dynamic_part>" of the name is aut-generated every time the cookie is created
__cfduid - Used to indentify individual clients using the same IP. This is done to prevent showing the same massage about outdated browser to the same user multiple times
