Cookie policy

Use of cookies by COST

Cookies are small text files that are placed on your computer by websites that you visit. They are widely used in order to make websites work, or work more efficiently as well as to provide information to the owners of the site. The tables below explains the cookies we use and why.

Essential cookies

The essential cookies are necessary for using COST website. Those cookies may therefore not be refused if you wish to use the COST website.


  • gdpr[allowed_cookies]
  • wordpress_
  • wordpress_logged_in
  • wordpress_test_cookie
  • wp-settings-
  • wp-settings-time-
  • __cfduid

These cookies are essential in order to enable you to move around the website and so cannot be disabled. They are mostly WordPress Core and Plugin cookies.

The __cfduid cookie is from CloudFlare where some required files are stored. Its purpose is to identify individual clients behind a shared IP address and apply security settings on a per-client basis.


  • _pk_id
  • pk_ses

Matomo is a GDPR compliant web analytics software platform. It provides detailed reports on the website and its visitors. 


  • _hjIncludedInSample

Part of the Cookies set by the Hotjar script. Its usage help us improve Users Experience by tracking each visitor anonymously.

What are my rights?

You have the right of access to your personal information and to ask for rectification, erasure or restriction of processing of your personal data.

You also have the right to object at any time to processing of your personal data provided to us in the framework of the use of cookies on the present site.

For more information on the use of those rights, please refer to the privacy policy for the website.