To make a website work properly, it may be necessary to place small data files called cookies on your device. This is a common practice for websites.

What are cookies

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.

Websites mainly use cookies to:

  • identify users
  • remember users’ custom preferences
  • help users complete tasks without having to re‑enter information when browsing from one page to another or when visiting the site later.

Cookies can also be used for online behavioural target advertising and to show adverts relevant to something that the user searched for in the past.

How are they used?

The web server supplying the webpage can store a cookie on the user’s computer or mobile device. An external web server that manages files included or referenced in the webpage is also able to store cookies. All these cookies are called http header cookies. Another way of storing cookies is through JavaScript code contained or referenced in that page.

Each time the user requests a new page, the web server can receive the values of the cookies it previously set and return the page with content relating to these values. Similarly, JavaScript code is able to read a cookie belonging to its domain and perform an action accordingly.

What are the different types of cookies?

A cookie can be classified by its lifespan and the domain to which it belongs. By lifespan, a cookie is either a:

  • session cookie which is erased when the user closes the browser or
  • persistent cookie which remains on the user’s computer/device for a pre-defined period of time.

As for the domain to which it belongs, there are either:

  • first-party cookies which are set by the web server of the visited page and share the same domain
  • third-party cookies stored by a different domain to the visited page’s domain. This can happen when the webpage references a file, such as JavaScript, located outside its domain.

Which cookies may be used by this site

The following first-party cookies:

  • Session cookies: guarantee that the registered users (when such option is enabled) are able to comment on the site, in order to discourage the use of automated applications (bots) and prevent spam.

The following third-party cookies:

  • Google Analytics: stores cookies in order to elaborate statistics about the traffic and number of visits of the site. By using this site you are consenting the treatment of your information by Google. Thereby, the exercise of any rights in this regard must be directly communicated to Google.
  • If any entry contains a flash player from YouTube, Vimeo or similar; they may be embedding cookies related to their respective portals.
  • Social networks: each social network uses its own cookies to offer diverse functionalities, such as clicking on the Like or Share buttons.