Difference between revisions of "Cookie"

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[[Category:Glossary]]
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A '''cookie''', also known as an '''HTTP cookie''', '''web cookie''', or '''browser cookie''', is a string of text sent from a [[wikipedia:web server|web server]] to a user's browser that the browser is expected to send back to the web server in subsequent interactions.
A small <span class="plainlinks">[http://www.mycaal.com/ <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">loan modification</span>] text file sent by a website’s server to be stored on the <span class="plainlinks">[http://www.ardenwoodforest.com/ <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">fremont ca condos</span>] user’s web-enabled device  <span class="plainlinks">[http://www.signalsforex.org/ <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">forex signals</span>] that is returned unchanged by the user’s device to the server on subsequent <span class="plainlinks">[http://www.gumball-machine.com/vending-machines.html <span style="color:black;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;">vending machines</span>] interactions. The cookie enables the <span class="plainlinks">[http://www.proposable.com <span style="color:black;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;">proposal software</span>] website domain to associate <span class="plainlinks">[http://www.shindiristudio.com/SEO-optimizacija-sajta/ <span style="color:black;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;">SEO optimization</span>] data with that <span class="plainlinks">[http://www.diamondlinks.net/ <span style="color:black;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;">link building</span>] device and <span class="plainlinks">[http://www.diamondlinks.net/ <span style="color:black;font-weight:normal; text-decoration:none!important; background:none!important; text-decoration:none;">link building</span>] distinguish requests from different devices <span class="plainlinks">[http://www.fieldandtechnicalservicesllc.info <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">Field and Technical Services LLC</span>]. Cookies often <span class="plainlinks">[http://wernerinternationalenterprises.net/ <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">Werner International Enterprises</span>] store behavioral <span class="plainlinks">[http://www.cleanfresnocarpets.com/ <span style="color:black;font-weight:normal; text-decoration:none!important;background:none!important; text-decoration:none;">clovis carpet cleaning</span>] information.
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A cookie has a few core attributes - the cookie value, the domain and path within which it is valid, and the cookie expiry. There are other attributes as well that limit the cookie to HTTPS-only transactions, or hide it from JavaScript.
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* The domain and path define the scope of the cookie - they tell the browser that cookies should only be sent back to the server for the given domain and path.
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* Cookies that do not have a specific expiration date and time are automatically deleted when the web browser is next closed.  Cookies with a set expiry time are considered '''persistent cookies''', while cookies without set expiry times are considered '''session cookies'''. 
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In online advertising, cookies generally store a unique identifier, and may contain information like what ads were recently seen (for [[frequency capping]]), when the cookie was created (to discover short duration identities), and other simple attributes. 
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[[Category:Glossary]]

Latest revision as of 16:13, 12 April 2012

A cookie, also known as an HTTP cookie, web cookie, or browser cookie, is a string of text sent from a web server to a user's browser that the browser is expected to send back to the web server in subsequent interactions.

A cookie has a few core attributes - the cookie value, the domain and path within which it is valid, and the cookie expiry. There are other attributes as well that limit the cookie to HTTPS-only transactions, or hide it from JavaScript.

  • The domain and path define the scope of the cookie - they tell the browser that cookies should only be sent back to the server for the given domain and path.
  • Cookies that do not have a specific expiration date and time are automatically deleted when the web browser is next closed. Cookies with a set expiry time are considered persistent cookies, while cookies without set expiry times are considered session cookies.

In online advertising, cookies generally store a unique identifier, and may contain information like what ads were recently seen (for frequency capping), when the cookie was created (to discover short duration identities), and other simple attributes.