Types of Internet cookies
There are several types of cookies, it is depending on how you categorize them.
Depending on their lifetime, they can be
Session cookies
A session cookie only lasts for the duration of the users using the website. A web browser normally deletes session cookies when it quits. A session cookie expires if the user does not access the website for a period of time chosen by the server (idle timeout) . If someone were to come behind us and use our computer, they wouldn’t be able to see anything on site that uses session cookies because they would have to answer our username and password again.
Persistent Cookies
A persistent cookie will outlast user sessions. If a persistent cookie has its max-age set to 1 year, then, within the year, the initial value set in the cookie would be sent back to the server every time the user visits the server. This could be used to record a vital piece of information such as how the user initially came to the website. For this reason, persistent cookies are also tracking cookies.
These are kinds of cookies that are used on websites that need to know who we are but offer us the ability to “remember me” when we enter our username and password. When you select “remember me”, the site will allow you into your account automatically.
Do not use this feature when someone else is going to use the computer you are on.
If you click the logout function, the cookie will be deleted and you will have to authenticate yourself again.
Judging by their domain, cookies are:
First-party cookies
1st party cookies are created and stored by the website you are visiting. They allow site owners to collect customer analytics data, remember language settings, and carry out other functions to provide you with a good user experience.
Third-party Cookie
Third-party cookies are cookies being set with a different domain than the one shown in the address bar.
For example, if you were to visit SendFlowers.com, it may set a cookie for the address of ad.someadvertiser.com. Later, when you visit RebuildEngines.com, it will set a cookie for ad.SomeAdvertiser.com.
Both of these cookies will be used by SomeAdvertiser.com to ascertain that you are the person who sends flowers and works on car. This is where cookies get a little tricky.
Third-party cookies are used by advertising agencies who have clients that pay for displaying ads for products and services but they don't want to waste money displaying them to people who are not going to be a customer. So they need to track the types of site you visit and make an educated guess if you are the kind of person who would be in the market for what they have to offer.
Not all cookies are saved in your browser:
Zombie Cookie
A zombie cookie is any cookie that is automatically recreated after a user has deleted it. This is accomplished by a script storing the content of the cookie in some other locations, such as the local storage available to Flash or Silverlight content , HTML5 games and other client side mechanisms.
Zombie cookies are initially used to keep people from cheating in on-line games. These cookies are written from the little widget you download in order to play the game.
You have to “accept” a download in order to have one of these written to your computer, so if you are not playing a game or know exactly what is being installed, then select “No”.
Super Cookies
A Super Cookie is a cookie with a public suffix domain, like “.com”, “.co.uk”, or”.k12”. Most browsers by default allow first-party cookies - a cookie with domain to be the same or the sub domain of the requesting host. For example, a user visiting www.google.com could have a cookie set for all of .google.com
As companies add more and more services, they want you to easily move from one of their services to another. These Super Cookies do just that. Make sure you “opt in” to each and every service, some malicious individuals will try to make their site look like the real site in order to fool you.