Your details will be stored in our database. When you register for free courses and events, we can delete your address after the audit if you so wish. When you register for paid courses and events, we are required to retain payment-related data in accordance with Article 958f of the Swiss Code of Obligations. We will, of course, treat your data as strictly confidential and will not pass it on to third parties. Privacy Policy. Once the statutory retention period has expired, your data can be deleted at your request.