Wednesday, October 9, 2013

What are cookies in browsers

Cookie is a HTTP header that consists of text-only data saved on your computer. This data commonly contains the domain, path, lifetime, and value of a variable that you set. If the lifetime of this variable is longer than the time the user spends at your site, then this string is saved to file for future reference.
Cookies received over the Internet should be considered more useful than

 dangerous. Without cookies, users could not have customized settings or would have to verify their identity each time they visit a site.

for example -->>
If you login to facebook for first time on a browser,if you have enabled login notifications to facebook then ,a window will display and ask you to 'save browser' or 'Don't save'.......once you click on save browser ,next time when you login to facebook on that browser,it will not ask you to save browser.


 Because cookies can be used to track you while at a site and can contain private information, there is potential that they could be compromised, but it is very unlikely.If you're concerned about web pages gathering information about your viewing habits or storing personal settings, disable cookies or increase browser security to prompt you before any cookie is created.
Tracking cookie :
   
     A tracking cookie is a cookie most often used by Internet advertisers and marketing companies that contains unique information about your computer (e.g. your IP address) that help a company identify your computer online. This helps the advertising company who created the cookie to deliver you ads it believes you'd be most interested in viewing on any site that is participating in its advertising network.

Why do anti-spyware programs warn me about tracking cookies?

Because these cookies can track your computer, they can be considered an invasion of privacy. It's up to you to decide if you want to save or delete these files. Apart from the potential privacy concerns, tracking cookies pose no threat to your computer.

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