Cookies are some little information that can be left on your computer by the other computer when we access an internet
Generally this information is left on your computer by some advertising agencies on the internet. Using the information stored in the cookies these advertising agencies can keep track of your internet usage. For the applications like on-line purchase systems once you enter your personal information such as your name or your email id then it can be remembered by these systems with the help of cookies.
Sometimes cookies are very much dangerous because by using information from your local disk some malicious data may be passed to you. So it is upto you how to maintain your privacy and security.
In my next discussion, I will post some help for developers like how to create a cookie.
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