The document discusses cookies, which are data stored on a user's machine for web browsing. It describes two types of cookies: session cookies that are temporary and deleted after the browser is closed, and persistent cookies that remain on the hard drive for future visits. Cookies enhance user experience by storing preferences and preventing repeated authentication, while also tracking website usage.

1. COOKIES

2. Some data is temporarily stored on user machine
COOKIES

3. •Client sends request
to visit a website.
•After authentication
of client, cookies are
sent along with
requested page.
Cookies

4. Cookies
• Two types of cookies
–Session ID
–Persistent

5. Session ID Cookies
• Relevant for only one session or visit to the
website
• Deleted when the browser window is closed
• Used for easy navigation throughout the visit
• In case of network failure, user does not have
to re-enter username and password.

6. Persistent Cookies
• Stored on user hard drive with a visit to
website
• Can be deleted manually from web browser
• Used to track user's likes and preferences on
the website.
• In case of re-visit to website, previously
collected data is used to give better user
experience.

7. Persistent Cookies
•Does not contain PII
•Used to track which
sections of website most
often visited

8. Cookies
• Helpful for
– Websites
– End Users
IF USED JUDICIOUSLY

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