About

Stefan Keller — independent privacy-by-design and security practitioner, Basel, Switzerland, operating under the registered brand Privacy Design®.

A rare combined technical + legal + security profile: privacy-by-design engineering, GDPR compliance, and ISO / EuroPriSe-style assurance.

Credentials: former EuroPriSe admitted expert (CEPE — Technical & Legal); CIPP/E, CISSP, CISM, CFE; ISO/IEC 27001 Lead Auditor and ISO/IEC 27032 Lead Cybersecurity Manager. Co-chaired IAPP KnowledgeNet Switzerland (2018–2019). Not a lawyer.

Combining good design, solid security, efficient processes and trusted services to protect people and their data.

This site is a personal, curated knowledge base and an independent perspective — not a commercial shopfront.