A cookie is a piece of data stored on the user’s hard drive while they are visiting a particular website. It contains simple information about the user’s identity but no personal information. When the user closes their browser, the cookie is destroyed.
You can choose to save login information in a cookie to enable faster login to a private area of this site. A notification is given before any such cookie is dropped, and the process is ultimately within your control. Even where this is used, the cookie still contains minimal authentication information, and does not contain any private or personal data.
Cookie name: _ga
Purpose: These cookies are used to collect information about how visitors use our site. We use the information to compile reports and to help us improve the site. The cookies collect information in an anonymous form, including the number of visitors to the site, where visitors have come to the site from and the pages they visited.
More information: developers.google.com/analytics/devguides/collection/analyticsjs/cookie-usage