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 Shahrad Rezaei Tehrani

 

 

What Are Cookies?

HERE IS YOUR COOKIE.
<%=Cookie%>

COOKIE DESCRIPTION
A message given to a Web browser by a Web server. The browser stores the message in a text file called cookie.txt. The message is then sent back to the server each time the browser requests a page from the server.

The main purpose of cookies is to identify users and possibly prepare customized Web pages for them. When you enter a Web site using cookies, you may be asked to fill out a form providing such information as your name and interests. This information is packaged into a cookie and sent to your Web browser which stores it for later use. The next time you go to the same Web site,your browser will send the cookie to the Web server. The server can use this information to present you with custom Web pages. So, for example, instead of seeing just a generic welcome page you might see a welcome page with your name on it.

The name cookie derives from UNIX objects called magic cookies. These are tokens that are attached to a user or program and change depending on the areas entered by the user or program. Cookies are also sometimes called persistent cookies because they typically stay in the browser for long periods of time.

OTHER LOCATIONS FOR INFORMATION ON COOKIES

CNET article on cookie security
This article, from April 1996, addresses privacy and security issues concerning cookies.

Cookies specification
This is Netscape's preliminary specification for HTTP cookies. Here you will find overview information as well as sample syntax and examples of transaction sequences.

Guide to persistent cookies information
This site has a good variety of information about persistent client side cookies, including many links to related sites, and examples of pages using cookies.

InContext article describing Netscape cookies
An article, from May 1996, describing the technical aspect of cookies, as well as privacy issues and possible misuse, and how to check your cookies file to see who is profiling you.

Netscape cookie secrets
This page provides information on how to write cookies for shopping cart applications, including sample C code.

PC Week article on HTTP cookie protocol
This article, from June 1996, describes how cookies are used to collect information on anything from web navigation to management of display of ads to users.

Yahoo's persistent cookies page
This is Yahoo's directory of persistent cookies.

 

This page was last updated on 03-Mar-2002.

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