A SEMINAR ON

INTERNET COOKIES

Presented by:Rohit Sharma1211156B.Tech 4 th yr.ECE(B1)

CONTENTSCONTENTS Introduction. Why are these files called “ Cookies “ ? Cookies Type.? Which best describes an internet cookie? Whats the point? Mmmm!! Cookies. The Problem with Cookies. Introduction to “Doubleclick Inc.” Breakdown of Cookie Parameters ? Are cookies Dangerous to my computer? Can I delete Cookies? Conclusion

WHAT ARE COOKIES ?

A cookie is a piece of text that a Web server canstore on a user's hard disk. Cookies allow a Web site to store information on a user's machine and later retrieve it.

WHY ARE THESE FILES CALLED “ COOKIES “ ?

A cookie is a well-known computer science term

that is used when describing an opaque piece of

data held by an System.

TYPE OF COOKIES Persistent Cookie Non-Persistent Cookie

PERSISTENT COOKIE

Persistent cookies help websites remember your information and settings when you visit them in the future.

These remain on your hard drive until you erase them or they expire. How long a cookie remains on your browser depends on how long the visited website has programmed the cookie to last. 

NON-PERSISTENT/SESSION COOKIE

These are temporary and are erased when you close your browser at the end of your surfing session. The next time you visit that particular site it will not recognise you and will treat you as a completely new visitor as there is nothing in your browser to let the site know that you have visited before.

KNOWING THE BASICS:

In the Business Week survey in 2000, only 40% of the randomly selected knew what an Internet cookie was.

WHAT’S THE POINT?

Sites use cookies to… Track number of visitors First timers vs. returning visitors How often the user visits the site.

WHERE ARE COOKIES?

You can find cookie files on your hard drive, your “C” drive.

MMMM! COOKIES…

They remember usernames for various sites that require log-in Also have the option to remember your passwords for

you! They allow you to shop as you browse via online

shopping carts!

THE PROBLEMS WITH COOKIES Multiple users on the same hard drive

Family computer, internet cafes Credit car7d fraud

Easily erasable Throw off site’s total counts

Can contain spyware! Can pass on personal information without user’s

permission (email address, phone number, credit card number, etc.)

DOUBLECLICK INC.

Developed cookie program that can follow and save user internet browsing.

Such cookie files are saved into text profiles. Profiles can be extensive and detailed. Serves over 200 billion ads per month.

BENEFITS OF DOUBLECLICK:

Advertisers! Allows internet advertisers to place their ads on sites

or pages which will reach their target audiences

BREAKDOWN OF COOKIE PARAMETERS

As we have just seen, a cookie contains more than simply a name anda value. In fact, a cookie has 6 parameters that can be passed to it:

The name of the cookie, The value of the cookie, The expiration date of the cookie, The path the cookie is valid for, The domain the cookie is valid for, The need for a secure connection to exist to use the cookie.

Two of these are mandatory (its name and its value). The other fourcan be set manually or automatically.

ARE COOKIES DANGEROUS TO MY COMPUTER?

Nooooo…..….. A cookie is a

simple piece of text. It is not a program. It cannot be used as a Virus.Your browser (not a programmer) can save cookie values to your hard disk if it needs to, but that is the limit of the effect on your system.

CAN I DELETE COOKIES?

Yes. Whether you use Internet Explorer or Netscape, yourcookies are saved to a simple text file that you can delete as youplease.

In order to do this properly, remember to close your browser first.This is because all your cookies are held in memory until you closeyour browser. So, if you delete the file with your browser open, it willmake a new file when you close it, and your cookies will be back.

Remember that deleting your cookie file entirely will cause you to"start from scratch" with every web site you usually visit. So, it may bepreferable to open the cookies.txt file and remove only the entries youdon't like, or go to the cookies folder and delete the files matchingservers you don't want.

Cookies are user friendly.Cookies are notharmful for your system. They just store yourdata/information,you can privately access later.Cookies remains alive in your system with yourinformation as long as it’s expiry time or may dieafter your browser close.

Cookies are user friendly.Cookies are notharmful for your system. They just store yourdata/information,you can privately access later.Cookies remains alive in your system with yourinformation as long as it’s expiry time or may dieafter your browser close.

CONCLUSIONCONCLUSION

Thank You!!

Questions…?

Thank You!!

Questions…?