Privacy Policy

Last updated: November 2026

This privacy policy explains which personal data is processed when you visit this website and what rights you have. This website is a static page: it uses no cookies, no tracking, no analytics and no third-party content such as embedded videos, maps or social media plugins. Fonts are delivered from this website's own server, not from external providers.

1. Controller

Till Zier
Friesenwall 29
50672 Köln
Germany
Email: till.zier@gmail.com

2. Hosting and server data

This website is hosted by Cloudflare, Inc., 101 Townsend St, San Francisco, CA 94107, USA (“Cloudflare”) via the Cloudflare Pages service. When you access the website, your browser automatically transmits technical data that Cloudflare processes in order to deliver the website and protect it against attacks, in particular:

• IP address
• date and time of access
• requested page or file
• browser type and version, operating system
• referrer URL (the page you came from)

This processing is necessary to display the website securely and reliably. The legal basis is Art. 6 (1) (f) GDPR; my legitimate interest lies in the technically error-free and secure provision of this website. I do not evaluate this data myself and do not combine it with other data.

Cloudflare acts as my processor on the basis of a data processing agreement pursuant to Art. 28 GDPR. Data may be processed in the USA. Cloudflare is certified under the EU-U.S. Data Privacy Framework, for which the European Commission has adopted an adequacy decision (Art. 45 GDPR); in addition, Cloudflare uses the EU Standard Contractual Clauses. Further information: cloudflare.com/privacypolicy.

3. Contacting me

If you contact me by email or phone, I process the data you provide (e.g. name, email address, phone number, content of your message) in order to handle your inquiry. The legal basis is Art. 6 (1) (b) GDPR if your inquiry relates to a contract or pre-contractual measures, and otherwise Art. 6 (1) (f) GDPR (legitimate interest in responding to inquiries). I delete the data once your inquiry has been dealt with, unless statutory retention obligations apply.

If you contact me via WhatsApp, your data is also processed by WhatsApp Ireland Limited (Meta) under its own responsibility and may be transferred to the USA. If you prefer to avoid this, please contact me by email or phone.

4. Links to other websites

This website contains links to external websites and social networks (e.g. LinkedIn, Xing, Instagram). No data is transmitted to these providers when you merely visit this website. Only when you click a link and leave this website does the respective provider process your data under its own responsibility.

5. Cookies and tracking

This website does not set any cookies and does not use any analytics, tracking or advertising tools.

6. Your rights

You have the right to:

• access your personal data processed by me (Art. 15 GDPR),
• rectification of inaccurate data (Art. 16 GDPR),
• erasure (Art. 17 GDPR),
• restriction of processing (Art. 18 GDPR),
• data portability (Art. 20 GDPR),
• object to processing based on Art. 6 (1) (f) GDPR on grounds relating to your particular situation (Art. 21 GDPR).

To exercise these rights, simply send an email to the address above. You also have the right to lodge a complaint with a data protection supervisory authority (Art. 77 GDPR), for example the authority responsible for my place of residence: Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen.

7. Changes

I will update this privacy policy if the website or the legal situation changes. The current version is always available on this page.