Privacy

Who is responsible

The controller is Nicolas Kaftan, trading as Decision Landing, Fettstraße 36, 20357 Hamburg, Germany. For privacy enquiries: nic@decision-landing.com. Phone: +49 151 1599 2706.

Visiting the website

This website is hosted by Vercel Inc., USA. Delivering and protecting the website involves technical connection data, including your IP address, requested page, access time and browser information. This information is used to serve the pages, maintain reliable operation and investigate faults or misuse.

The legal basis is Article 6(1)(f) GDPR: our legitimate interest in providing a reliable and secure business website. Vercel processes hosting data on our behalf. Its Data Processing Addendum provides for EU Standard Contractual Clauses where applicable to international transfers.

Technical data is retained for as long as necessary for service operation, security and applicable legal obligations, then deleted or anonymised. Retention may be longer where needed to investigate an incident or establish, exercise or defend legal claims. Further information is available in Vercel’s privacy notice.

Cookies and measurement

We do not use analytics, advertising pixels, tracking cookies or browser storage on this website. There are no embedded third-party forms or scheduling tools. Fonts, images and article PDFs are served with the website. Ordinary visits do not require a cookie consent banner.

Contacting us

You can contact us by email or telephone. We use the information to respond and, where relevant, discuss or deliver our services.

Article 6(1)(b) GDPR applies where processing is necessary for a potential or existing contract with you. For other professional correspondence, Article 6(1)(f) GDPR applies to our legitimate interest in responding to enquiries and maintaining business relationships.

Our business mailbox is provided by checkdomain GmbH, Große Burgstraße 27/29, 23552 Lübeck, Germany. Email delivery and spam protection involve processing the message, sender and recipient details, and technical connection information. See checkdomain’s privacy information.

We keep correspondence for as long as needed to address the enquiry or fulfil any resulting engagement. We then delete it unless statutory retention duties or the establishment, exercise or defence of legal claims require continued storage.

Links and downloads

Links to research, institutions and the book take you to other providers’ websites. Those providers are responsible for their own processing when you visit them. Merely displaying these ordinary links does not load their pages. Article PDFs are supplied directly from this website.

Your rights

Subject to the conditions in the GDPR, you may request access to your personal data, correction, erasure, restriction of processing or data portability. You may object to processing based on legitimate interests on grounds relating to your particular situation. Where processing relies on consent, you may withdraw it without affecting the lawfulness of earlier processing.

You may complain to a supervisory authority, including the Hamburg Commissioner for Data Protection and Freedom of Information, or the authority where you live or work.

Updates

This notice will be updated when the website or its processing arrangements change.

Last updated: 24 September 2026.