The full list of cookies we use is:
Cookie: _gat
Type: Persistent
Purpose: Google Analytics tracking
Cookie: _gid
Type: Persistent
Purpose: Google Analytics tracking
Cookie: _ga
Type: Persistent
Purpose: Google Analytics tracking
Cookie: PHPSESSID
Type: Session
Purpose: The main session cookie set by the website.
Cookie: __cfduid
Type: Persistent
Purpose: CloudFlare service secure flag cookie