Cookies

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.

How do we use cookies?

We use cookies to remember personal preferences such as language choice for content. We also use cookies to anonymously gather analytics data that helps us to understand how people use our websites so that we can improve them. Some videos embedded in content on our pages use a cookie to anonymously gather statistics on how you got there and what videos you visited in order to suggest other, related videos to watch.

In most cases they don’t contain personally identifiable data. On certain websites, including registration pages, recruitment pages and questionnaires, you may be asked to provide additional information, such as an email address.

Which cookies do we use?

Cookies are set when you submit a form, login or interact with the site by doing something that goes beyond clicking a link. We use the following types of cookies:

Cookie

Duration

Used for

_ga 2 years Used to distinguish users

_gat

10 minutes

Used to throttle request rate

_gid 1 day Used to distinguish users
__utma, __utmt, __utmb, __utmc, __utmc, __utmz, __utmv  23 days Various cookies used by Google analytics to determine whether the session is new, or to distinguish sessions and users. Read more about their usage and policy here.
Drupalb01_443 End of session Allows Drupal to more efficiently perform operations to enhance the user experience.
Drupalb01_80 End of session Allows Drupal to more efficiently perform operations to enhance the user experience.
DRUPAL_LB_PROD_HTTP_ID End of session Allows Drupal to more efficiently perform operations to enhance the user experience.
Has_js End of session Determines whether or not JavaScript is enabled so that Drupal can more efficiently perform operations to enhance the user experience.
Inveniosession, inveniosessionstub, pkid.1373.b1ed, pkref.1373.b1ed, jwplayer.captionLabel End of session Used by the CDS multimedia library to track statistics and provide a better user experience, such as replaying a video from when you previously stopped watching.
cookieconsent_dismissed 1 year Used to check whether the privacy statement was accepted or not
SimpleSAMLAuthToken, SimpleSAMLSessionID 1 year or until logged out Used to distinguish the sessions of logged in users
_pk_id... 13 months Used to distinguish users
_pk_ses... 30 minutes Used to keep track of the current session
cerndrupal_prod_https, cerndrupal_prod_http End of session Used for load balancing
SSESSec... End of session Used to keep track of the current session for a logged in user

How to control cookies

You can control and/or delete cookies as you wish – for details, see aboutcookies.org. You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.

Further information

Read our full data privacy protection policy