Cookies are small text files that are placed on your computer by websites that you visit. They are widely used in order to make websites work or work more efficiently. As well as to provide information to the owners of the site.
Purpose: This cookie records whether the visitor came from a search engine (and if so, the search keyword used), a link, or from no previous page (e.g. a bookmark).
To find out more about the cookies set by google analytics please visit the following link https://developers.google.com/analytics/resources/concepts/gaConceptsCookies#cookiesSet