A cookie is a small information sent by a website and stored in the user's browser so that the website can check the user's previous activity.
Its main functions are:
Take control of users: When a user enters their username and password, a cookie is stored so that they do not have to be entered for each page of the server. However, a cookie does not only identify a person but a combination of computer-browser-user.
Get information about the user's browsing habits, spyware attempts (spyware), advertising agencies and others. This can cause privacy issues and is one of the reasons why cookies have their detractors.
Cookies can be deleted, accepted or blocked as desired, for this you should only conveniently configure the web browser.
Cookies are usually used by web servers to differentiate users and to act differently depending on them.
Cookies are also used to track users on a website. Tracking on a single site is usually done with the intention of maintaining usage statistics, while cross-site tracking typically targets the creation of anonymous user profiles by advertising companies, which will then be used to target campaigns (Decide what type of advertising to use) based on user profiles.
Most modern browsers support cookies. However, a user can usually choose whether cookies should be used or not.
Cookies have important implications for the privacy and anonymity of web users. Although cookies are only sent to the server that defined them or to another server in the same domain, a web page may contain images and other components stored on servers in other domains. The cookies that are created during requests for these components are called third-party cookies.
Advertising companies use third-party cookies to track users across multiple sites. In particular, an advertising company can follow a user through all the pages where they have placed advertising images or web bugs. The knowledge of the pages visited by a user allows these companies to direct their advertising according to the supposed preferences of the user.
The possibility of creating a user profile has been considered as a potential threat to privacy, even when tracking is limited to a single domain, but especially when it is across multiple domains through the use of third party cookies. For this reason, some countries have legislation on cookies.
The user receives information on how these data are used;
The user has the possibility to reject this operation.
However, this article also states that storing data that is necessary for technical reasons is allowed as an exception.
How to disable or delete cookies?
You can allow to block or remove installed cookies from your computer by configuring the browser options you have installed. Here are the steps to disable or remove cookies in the main browsers:
To configure permissions related to cookies installed in the Google Chome browser you can click on the following link.
To configure the permissions related to the cookies installed in the Mozilla Firefox browser you can click on the following link.
To configure the permissions related to cookies installed in the Microsoft Internet Explorer browser you can click on the following link.
To configure the permissions related to the cookies installed in the Safari browser you can click on the following link.
ATTENTION: In a case of blocking the cookies of your browser it is possible that certain services or functionalities of the website are not available.