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Privacy Policy

Last updated: May 2026

Convenience translation. This website is operated from Germany. The German version of this privacy policy (Datenschutzerklärung) is legally binding.

Contents
  1. 1. Controller
  2. 2. Principle
  3. 3. Hosting
  4. 4. Data collection when visiting the website
  5. 5. Cookies
  6. 6. No disclosure to third parties
  7. 7. Data processing in the context of our services
  8. 8. Your rights
  9. 9. Right to lodge a complaint
  10. 10. Currency of this policy

1. Controller

Dr. Hendrik Wesselmeier
Wesselmeier KI-Lösungen
Nordwalder Straße 140
48282 Emsdetten
Germany
E-mail: info@wesselmeier.com

2. Principle

The protection of personal data is taken seriously. This privacy policy explains what data is collected when you visit this website, how it is used and what rights you have.

Personal data is processed exclusively in accordance with the General Data Protection Regulation (GDPR, in German: DSGVO) and the German Federal Data Protection Act (BDSG).

3. Hosting

This website is hosted by:

Strato AG
Otto-Ostrowski-Straße 7
10249 Berlin
Germany
Web: www.strato.de

The use of Strato is based on Art. 6(1)(f) GDPR. A data processing agreement (DPA, in German: AVV) has been concluded. Strato processes data exclusively on servers in Germany.

4. Data collection when visiting this website

4.1 Server log files

When you access this website, the hosting provider automatically stores the following data in server log files:

  • IP address of the requesting device
  • Date and time of access
  • Name and URL of the retrieved file
  • Browser type and version
  • Operating system
  • Referrer URL (previously visited page)

Legal basis: Art. 6(1)(f) GDPR (legitimate interest in the technically error-free presentation and optimization of the website). The data is deleted after 7 days at the latest.

4.2 Contact by e-mail

If you contact us by e-mail, the transmitted data (name, e-mail address, message content) is stored to process your inquiry. It is not passed on to third parties.

Legal basis: Art. 6(1)(b) GDPR (pre-contractual measures) or Art. 6(1)(f) GDPR (legitimate interest in answering inquiries). The data is deleted as soon as the purpose of processing no longer applies and no statutory retention obligations prevent this.

4.3 SSL or TLS encryption

For security reasons, this site uses SSL or TLS encryption. You can recognize an encrypted connection by “https://” in the address bar and the lock icon in your browser. When encryption is enabled, data you transmit cannot be read by third parties.

5. Cookies

This website does not set any cookies itself. The hosting provider Strato may set session cookies as part of technical operation, which do not process personal data.

6. No disclosure to third parties

Personal data is not passed on to third parties unless this is necessary for the performance of a contract or required by law.

7. Data processing in the context of our services

7.1 On-premise installation

The implemented AI systems run entirely locally (on-premise) on the customer's own infrastructure. No sensitive data is uploaded to a cloud or to external servers.

Since the systems are merely installed and maintained, a data processing agreement (DPA) pursuant to Art. 28 GDPR is concluded with every customer. This serves as a legal safeguard in case technical access to system components becomes necessary during maintenance work.

7.2 AI model development (fine-tuning & RAG)

In projects for the development and specialization of AI models, it may be necessary for data to be made available.

Type of data: Specialist documents, internal texts, transcripts or other materials as the basis for model development. In individual cases these may contain personal data.

Purpose: Creation and curation of training data, expert annotation, development and evaluation of the target model in accordance with the project assignment.

Legal basis: Art. 6(1)(b) GDPR (performance of a contract). For special categories of personal data: Art. 9(2)(a) GDPR (explicit consent).

Place of processing: Exclusively on own hardware in Germany. No data transfer to third countries.

Storage period: Project data is deleted after completion of the project and handover of the model files, unless statutory retention obligations prevent this. The specific period is agreed in the project contract.

DPA: For every project in which personal data is processed, a data processing agreement pursuant to Art. 28 GDPR is concluded.

Recommendation: Where possible, provide anonymized or pseudonymized data. This reduces the data protection effort on both sides and is generally fully sufficient for model development.

The model developed in the project and all associated weights remain your property and are handed over to you in full after project completion. No copy is retained, and your data or the model are not used for own purposes.

7.3 Behavior & stability analysis

As part of the linguistic-cognitive analysis reports (service 03), information about the AI system to be examined is processed. This includes in particular system descriptions, configuration details and, where provided by the customer, example dialogues.

Where these materials contain personal data (e.g., chat logs from customer service), the same principles apply as under 7.2: processing exclusively on own hardware in Germany, conclusion of a DPA, deletion after project completion. The resulting analysis report contains no personal data.

8. Your rights

You have the following rights against the controller regarding your personal data:

  • Right of access (Art. 15 GDPR)
  • Right to rectification (Art. 16 GDPR)
  • Right to erasure (Art. 17 GDPR)
  • Right to restriction of processing (Art. 18 GDPR)
  • Right to data portability (Art. 20 GDPR)
  • Right to object (Art. 21 GDPR)

To exercise your rights, please contact: info@wesselmeier.com

9. Right to lodge a complaint

You have the right to lodge a complaint with a data protection supervisory authority about the processing of your personal data. The competent supervisory authority is:

Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen (LDI NRW)
(State Commissioner for Data Protection and Freedom of Information of North Rhine-Westphalia)
Kavalleriestraße 2-4
40213 Düsseldorf
Germany

10. Currency of this policy

This privacy policy is adjusted as needed. The current version is available on this page. Last updated: May 2026.

© 2026 Wesselmeier KI-Lösungen · Dr. Hendrik Wesselmeier
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