Threema
Message privately without sharing your phone number. Swiss-built, open source, and designed to collect as little data as possible.
Threema Security & Privacy
How Threema handles your data, where it's stored, and what certifications back their claims.
GDPR
Legal Jurisdiction
Switzerland (HQ: Pfäffikon SZ, Switzerland) / Comitis Capital GmbH (since January 2026, previously Afinum Management)
Threema is fully GDPR-compliant and operates under Swiss data protection law, which is recognized as equivalent by the EU. All data is processed on servers in Switzerland. The app collects as little data as possible by design, and messages are deleted from servers after delivery.
Data Storage Locations
Compliance & Certifications
- ✓ISO 27001 (data center)
- ✓Independent security audit by Cure53 (2020, 2024)
- ✓Formal security proof of Ibex protocol (2023)
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