__utmz
Contains information about the traffic source or campaign that directed user to the website. The cookie is set when the GA.js javascript is loaded and updated when data is sent to the Google Anaytics server
目的
Contains information about the traffic source or campaign that directed user to the website. The cookie is set when the GA.js javascript is loaded and updated when data is sent to the Google Anaytics server
遵守 GDPR
法律依据: 合法权益（《欧洲个人信息权公约》第 6(1)(f)条）
根据 GDPR 规定，除非是网站核心功能所严格需要的，否则该 cookie 必须征得用户同意。
参考编号: 256c2c3e-d881-11e9-8a34-2a2ae2dbcce4