Due to the entry into force of the amendment of the “Law of Services of the Information Society” (LSSICE) established by Royal Decree 13/2012, it is mandatory to obtain the express consent of the user of all websites that use cookies expendable, before it navigates through them.


Cookies are small pieces of data, stored in text files, that are stored on your computer or other device when websites are loaded in a browser. They are widely used to “remember” you and your preferences, either for a single visit (through a “session cookie”) or for multiple repeat visits (using a “persistent cookie”). They ensure a consistent and efficient experience for visitors, and perform essential functions such as allowing users to register and remain logged in. Cookies may be set by the site that you are visiting (known as “first party cookies”), or by third parties, such as those who serve content or provide advertising or analytics services on the website (“third party cookies”).

Both websites and HTML emails may also contain other tracking technologies such as “web beacons” or “pixels.” These are typically small transparent images that provide us with statistics, for similar purposes as cookies. They are often used in conjunction with cookies, though they are not stored on your computer in the same way. As a result, if you disable cookies, web beacons may still load, but their functionality will be restricted.

The use of these devices allows the Web server to remember some data concerning the user, such as your preferences for viewing the pages of that server, name and password, products that most interest you, etc..


According to the EU directive, the cookies that require the user’s informed consent are analytical cookies and advertising and affiliation cookies, with the exception of technical cookies and those necessary for the operation of the website or the provision of services expressly requested by the user.


Regarding the types of cookies, there are five main groups:

Analytical cookies: they collect information on the use made of the website.

Social cookies: are those necessary for external social networks.

Affiliate cookies: allow tracking of visits from other websites, with which the website establishes an affiliation contract (affiliation companies).

Advertising and behavioral cookies: they collect information about the user’s preferences and personal choices (retargeting).

Technical and functional cookies: these are those strictly necessary for the use of the website and for the provision of the contracted service.


List the names of cookies, type, owner, function and expiration, for example:

PHPSESS ID: technical and strictly necessary cookie containing the session identifier. It is deleted when the browser is closed.

_ lang: technical and strictly necessary cookie containing the session language. It is deleted when the browser is closed.

ac_ cookies: technical and strictly necessary cookie containing the value of whether the installation of cookies has been accepted. It expires in 1 year from the last update.

_ga: Google Analytics cookie that enables the unique visits control function. The first time a user enters the website through a browser this cookie will be installed. When this user enters the website again with the same browser the cookie will consider that it is the same user. Only in the event that the user changes browser, it will be considered another user. It expires 2 years after the last update.

_ gat: this cookie is associated with Google Analytics Universal. It is used to limit the request rate (limiting data collection on high-traffic sites). It expires after 10 minutes.

utma: Google Analytics cookie that records the date of the first and last time the user visited the website. It expires 2 years after the last update.

utmb: Google Analytics cookie that records the time of arrival on the website. It expires 30 minutes after the last update.

_utmc: Google Analytics cookie used for interoperability with the urchin.js tracking code. It is deleted when the browser is closed.

_utmt: Google Analytics cookie. This cookie is used to process the type of request requested by the user. It expires at the end of the session.

utmv: Google Analytics cookie. This cookie is used to segment demographic data. It expires at the end of the session.

utmz: Google Analytics cookie that stores the traffic source or a campaign to explain how the user arrived at the website. It expires 6 months after the last update.





  1. Select the Tools icon
  2. Click on Settings
  3. Click Show Advanced Options.
  4. In the “Privacy” section click on Content Settings.
  5. Delete cookies : Click on All cookies and site data …
  6. Do not allow cookies to be stored.
  7. Click on Delete browsing data (clear the Cache).
  8. Close and restart the browser.

For more information about Chrome click Here 

Internet Explorer.  Version 11

  1. Select Tools / Internet Options.
  2. Click on the General tab.
  3. In the “Browsing History” section, click Delete browsing history on exit.
  4. Select Delete files.
  5. Select Delete cookies.
  6. Click on Eliminate.
  7. Click OK.
  8. Close and restart

For more information about Internet Explorer click Here


Firefox. Version 18

  1. Select Firefox /History /Clear recent history.
  2. Next to “Details” click on the down arrow.
  3. Select the following checkboxes: Cookies, Cache, Active Logins.
  4. Using the “Time interval to clear” drop-down menu, select All.
  5. Click Delete Now.
  6. Close and restart the browser.
  7. You can accept or reject cookies individually in Firefox Preferences, in the History section available under Tools > Options > Privacy.

For more information about Mozilla Firefox click Here 

Safari Version 5.1

  1. Select the Safari / Edit /Restore Safari icon.
  2. Select the following checkboxes: Clear history, Delete all website data.
  3. Click Reset.
  4. Close and restart the browser.
  1. For more information about Safari click Here


  1. Options – Advanced – Cookies.
  2. The cookie options control how Opera handles cookies and therefore their acceptance or rejection.
  1. For more information about Opera click Here

Other browsers

Consult the documentation of the browser you have installed.