- What makes Threema secure?
- How does Threema compare to other messengers?
- What’s special about Threema’s privacy protection?
- Which data gets stored at Threema?
- Is Threema open source?
- Are messages stored in encrypted form on my device?
- Could you decrypt my messages, for example if you were required to by law enforcement?
- How do you protect yourself against man-in-the-middle (MITM) attacks with Threema?
- Where are the servers located?
- Will my address book data be sent to your servers?
- How does Threema audit its code?
- How and where is my key pair generated?
- Is the use of Threema compliant with privacy laws?
- How can I find out which data is stored about my ID on Threema’s server?
- What kind of data is transmitted via push notification services?
Is Threema open source?
Yes, to ensure full transparency, the Threema apps are open source.
Thanks to reproducible builds, there’s also a way to verify that the published code (of the Android app, for the time being) actually corresponds to the apps available for download in the app stores.
To learn how to download, build, and reproduce the Threema app’s code, please refer to the Open Source subsite.