Cookies information


Our website utilizes cookies. Cookies are text files stored in the Internet browser or by the Internet browser on the user’s computer system. If a user visits a website, a cookie can be stored on the user’s operating system. This cookie contains a sequence of characters enabling the browser to be clearly identified when visiting the website again.

Functional cookies

We deploy cookies to make our website more user-friendly. Some elements of our website also technically require the identification of the visiting browser after a change of page. The following data are saved and transmitted in the cookies:

email 	                        Session 	Used during account creation
destination_url 	        Session 	Used during login to redirect to the requested page
sso_destination_url 	        Session 	Used during SSO login to redirect to the requested page
fsl 	                        Session 	Full screen login client setting
cn 	                 	Forever 	Client clear notifications. I’m counting this as user input instead of personalization because it doesn’t make sense to ‘undo’ or change cleared notifications.
_bypass_cache 	                Session 	Used with ‘fsl’ for full screen login
_t 	                        1440 hours 	User authentication token cookie  SiteSetting.maximum_session_age.hours.from_now
_forum_session 	                Session 	Session cookie
dosp 	                        next page view 	Temoporary cookie that informs client denial of service protection is in place.

Web analysis cookies

For the statistical data recording of utilization behaviour, we deploy the Matomo web analysis program (formerly: Piwik), which utilizes cookies and JavaScript to collect various information on your computer and transmit it to us automatically. Each time you visit our websites, our system records the following data and information from the visiting computer’s computer system:

IP address, anonymized by shortening
Two cookies to differentiate different visitors (pk_id and pk_sess)
Previously visited URL (referrer), if communicated by the browser
Name and version of the operating system
Name, version and language setting of the browser

Additionally, if JavaScript is activated:

URLs visited on this website
Times at which pages are visited
Type of HTML queries
Screen resolution and colour depth
Formats and techniques supported by the browser (e.g. cookies, Java, Flash, PDF, WindowsMedia, QuickTime, RealPlayer, Director, SilverLight, Google Gears)


If you don’t want being tracked you utilize our opt-out function. Click the following selection box in order to stop data recording or to reactivate it. If the selection box is deactivated, our central server will not store any data about you. Important: For the opt-out, we have to store a special recognition cookie in your browser. If you delete it or utilize another PC/browser, you will need to revoke data recording again on this page.