The controller is Dirk Ertner (DE), Königstraße 23, 14109 Berlin, Germany. The email address for privacy enquiries is provided in the legal notice.
When you visit the website, the server processes technical access data, including your connection’s Internet Protocol (IP) address, time, requested page, response status and browser information. This data is used to deliver the website, investigate errors and protect the service. The legal basis is Article 6(1)(f) of the General Data Protection Regulation (GDPR), reflecting the legitimate interest in reliable and secure website operation. Access records are kept only as long as needed for these purposes. Specific security incidents may require longer retention for investigation.
Information supplied in an email is used to handle the enquiry. Contractual and pre-contractual enquiries are processed under Article 6(1)(b) GDPR; other enquiries under Article 6(1)(f) GDPR, reflecting the interest in responding. Information is deleted when the enquiry is complete, unless legal retention duties or necessary evidence require otherwise. Technical service providers may receive data where necessary for operating the website and email communications.
The website uses technical session cookies for session and sign-in functions. It does not embed analytics or marketing services. Publisher and retailer websites open only when you follow the relevant link; their own privacy information then applies.
Subject to the GDPR, you have rights of access, rectification, erasure, restriction of processing and data portability. You may object to processing based on legitimate interests on grounds relating to your particular situation. You may also complain to a data protection supervisory authority, including the Berlin Commissioner for Data Protection and Freedom of Information.
Updated: 9 November 2026.
