A cookie, also known as an HTTP cookie, web
cookie, or browser cookie.
What is an 'Internet Cookies' ?
A cookie is a TEXT object send by web server
to a browser or on your hard drive.
The main purpose of a cookie is to identify
users and remember stateful information
(such as items in a shopping cart) or to save site
login information for you
WHO CAN SEE THE COOKIES?
Only the server that put the cookie on
your hard drive.
Larger sites can set a domain attribute for
other servers in the same sub domain
What Do 'Cookies Look Like' ?
Where does the term "Cookie" come
Cookies for the internet were originally
developed in 1995 by the Netscape
Communications Corporation. The word
"cookie" comes from "magic cookie,"
A computer science term for a piece of
information shared between co-operating pieces
of software. So where does "magic cookie"
come from? Some say it comes from the
computer games of the late 80's & early 90's.
Eating Magic Cookies in the game would give
the player special powers
Types Of Cookies
1.Session Cookies: Stored in memory
Valid for one session.
One session means time between opening and
closing of your browser.
As the browser store in memory this cookies also
stored in memory. As the browser goes out of
memory the cookies also deleted.
2. Persistent Cookies: Stored in hard drive
They are Stored for more than one browser
session. Hence they are stored in hard drive.
Persistent cookies stay with your browser even
after you've exited it.
The next time you open your browser and access
the website that placed the cookie on your
browser, it will find the cookie still there.
They are actually very helpful.
3. Secure Https:
They are only useful when you are transferring
data via https (secure) protocol.
Used for secure transmission of information.
Like bank transaction.
Ensuring that the cookie is always encrypted
when transmitting from client to server.
This makes the cookie less likely to be exposed
to cookie theft.
4. Http Only
Can be used only via HTTP protocol.
Restrict acces from other non-HTTPAPIs.
Suppose I have a http only cookies so it can not
be accesed by non http script like java script.
They are much more secure than other cookies.
6. Third Party Cookies
This cookies generate from first party.
They just track you and expose your privacy.
A Web site that is not the site you are visiting.
For example, if the Web site you are on using
third-party advertising those third-party
advertising Web sites may use a cookie to track
your Web habits for marketing purposes.
7. Super or Zombi Cookie
Most Dangerous cookies.
Some cookies are automatically recreated after
a user has deleted them; these are called zombie
Other Attributes Of Cookies
Name , Value , Expiry of the cookie
Path , Domain the cookie is good for
Need for a secure connection to use the
Whether or not the cookie can be accessed
through other means than HTTP (i.e.,
1. Session management:
Cookies may be used to maintain data related to
the user during navigation, possibly across
Eg. You are buying online so it keep track of the
things which you buy.
Keep track of your preferences on any website.
Suppose Theme,Layout etc
Done by third party website.
Track you moving one site to another.
Or with in the website.
Delete Chrome Cookies
Cilck on the side bar in chrome.
Now click on Settings option.
In 'Privacy' click on Content Settings.
Here you will found Cookies Section. Now
click on 'All Cookies site data'.
You will found all the cookies stored in your
chrome. Now you can delete by your choice
either one or all.
Delete Firefox Cookies
Please not there are some variations depending
on your operating system and if you wish to
delete a single cookie or all cookies from Firefox.
At the top of the Firefox window, click on the
Firefox button (Tools menu in Windows XP) and
then click Options.
Select the Privacy Panel and set the Firefox will:
option to Use custom settings for history
Delete Firefox Cookies Conti..
Now click on the button labelled Show
Cookies… and a the Cookies window will
In the Search: field, type the name of the site
whose cookies you want to remove. The cookies
that match your search will be displayed. You can
now select the cookie(s) in the list to be removed
and click Remove Cookie button.