HTTP is a stateless protocol meaning each server request is treated independently without remembering the user. Cookies were invented to allow websites to maintain state by storing small text files on a user's computer to track their activity on a site. Cookies remember things like login details, items in a shopping cart, and site preferences, allowing for a more personalized experience across web pages.

2. “HTTP is a „stateless‟ protocol. This means that each visit to a site
(or even clicks within a site) is seen by the server as the first visit by
the user. In essence, the server "forgets" everything after each
request.”

3. “Cookies are a very important method for maintaining state on the Web. "State"
in this case refers to an application's ability to work interactively with a
user, remembering all data since the application started, and differentiating
between users and their individual data sets.”
“Cookies are simply text files
sent by a Web site to your
computer to track your
movements within its pages.
They're something like
virtual license
plates, assigned to your
browser so a site can spot
you in a sea of millions of
visitors. Cookies remember
your login and password, the
products you've just
bought, or your preferred
color scheme.”

4. Lou Montulli, a founding engineer at
Netscape Communications, invented the
cookie as a way to create a virtual
shopping cart, essentially launching e-
commerce in 1994.
The stateless internets has no memory of
a browser‟s actions. Moving from page to
page is like the first time all over again for
the internets. Cookies remember the
selections a user has made from page to
page, thus allowing for the experience of
a virtual shopping experience.

5. Lou Montulli went on to be named People Magazine‟s sexiest internet mogul
in 1998

6. “An analogy I like to use is a laundry cleaner's shop. You drop something
off, and get a ticket. When you return with the ticket, you get your clothes back.
If you don't have the ticket, then the laundry man doesn't know which clothes
are yours. In fact, he won't be able to tell whether you are there to pick up
clothes, or a brand new customer. As such, the ticket is critical to maintaining
state between you and the laundry man.”

7. •Only last for the duration of a user‟s visit to a site
•Allows data selection to be remembered from page to page
•Most common cookie associated with virtual shopping

8. •Store authentication data: log-in info
•Personal preferences like theme and
language selections
•Preferences remembered when user visits
site later in the future

9. •Only used when user is using HTTPS
•Cookies are encrypted protecting
against “eavesdropping” or
“cookiejacking”

10. •Flash-based cookies
•Used for tracking
•Resist being deleted

11. •Allow web traffic tracking companies to track
unique user information across multiple browser
platforms
•Can last for years or decades
•If deleted, will come back to life

12. “So, what would happen if the king of the
Internet magically banned cookies
tomorrow? Much of the Web would cease
to exist. Many Web sites would require
more frequent registration—you'd have to
log in every time you visited the New York
Times, since the site wouldn't remember
you. And forget about shopping online.”

14. Facebook tracks your web
acitivity outside of facebook.com
even when you‟re logged out.
A cookiejacking vulnerability was
discovered in the latest version of
IE. Most cookies don‟t have any
valuable info, but your
Gmail, Twitter, and Facebook
cookies have all log-in info stored.
Bad news. Saved any credit card
info to a site you frequently shop
at? Vulnerable to hackers!

15. •Delete cookies from your browsers on the
regular
•Relegate Facebook to it‟s own browser
•Don‟t use IE
Not all cookies are bad, though. They make our
user experience (mostly) seamless. We win the
Internet!