Based on the origin of the cookies, we have:

[bellal 12771]

Cookies can be classified into various types.

Based on their duration , we have:

- temporary session cookies (temporary cookies): these are linked to the browsing session on a site, they allow to identify a user who accesses services protected by login. These cookies are used to avoid that for each page of that specific site we are asked to log in, but they are temporary and are deleted at the end of the browsing session;

- permanent cookies (persistent cookies): these are cookies that remain on the user's computer even after the end of browsing a site. They can only be deleted by the user or at their expiration date and are used to provide information on the browsing of that particular computer.

- first-party cookies - first-party cookies: these are cookies germany telegram data sent to your browser directly from the site you are visiting;

- third-party cookies - third-party cookies: these are cookies sent to your computer from other sites that run content on the page you are viewing. Third-party cookies are often permanent cookies.

Very often, the sites we visit contain content and services that come from other sites , such as social network buttons (e.g. Like, Follow), Google AdWords banners or other advertising companies. These contents that come from third-party sites can set a cookie on our computer, hence the name third-party cookies.

When we visit a site, we may have identification cookies (proprietary), and cookies from social profiles and advertising networks present on that page (third-party cookies). Third-party cookies are often used to record which sites are visited and which banners are clicked, so as to track the behavior of a computer-user and propose targeted advertising, based on the real interests of a user and not on the content of the page visited. These are also called tracking cookies.

To describe how a tracking cookie works, let's take for example advertising on the Google Display Network , managed through doubleclick.net. Many sites feature banners from advertisers who adhere to the Display Network.

If a user visits primosito.it which contains advertising from the Display Network, the doubleclick.net server will send a tracking cookie to the user's computer. The same user goes to secondosito.it and here too there is advertising from the Display Network; the cookie already present in the computer will also provide data to the doubleclick.net server from the previous visit, furthermore if the user clicks on a banner, the cookie will also record this information. Therefore doubleclick.net knows all the sites in its network that the user visits and what the user does on these pages, if he clicks on the banner and if he continues the purchase of a certain product.