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Wednesday, September 18, 2013

Cookies in Google Analytics



Cookie is a text file which is used to store information about a visitor, his preferences, location and other details.
There are two types of cookies:
First Party Cookies
First party cookies are issued by the website being visited and only the website which issued the first party cookie can read the cookie.

Third Party Cookies
Third party cookies are issued by the website(s) other than the website being visited.
Analytics uses First party cookies.
Persistent cookies are the cookies with expiration date. They remain on your computer even when you end the web session or close your browser window. They can be read by the website that created them on return visits. 
Temporary cookies are cookies without expiration date. They expire as soon as you end the web session or close the browser window.
Google Analytics can set following five first party cookies:
_utma (unique visitor cookie)
_utmb (session cookie)
_utmz (Campaign cookie)
_utmv (visitor segmentation cookie)
_utmx (Google Website Optimizer cookie)

All of the Google Analytics cookies are persistent.

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