Various bug fixes and minor improvements
Security fix: A malicious directory server could theoretically trick a client into encrypting an arbitrary message to another user. The protocol and apps were updated to prevent this. The issue was never exploitable without having privileged access to Threema infrastructure (reported by Jonathan Krebs, Universität Erlangen-Nürnberg).
In poll results, abstentions are now listed separately
Key fingerprint replaced with public key in UI
Enhanced support for Scoped Storage
Numerous under-the-hood improvements
Various bug fixes and minor improvements
Please note: This update requires Android 5.0 or later. Learn more…
Completely revamped contact synchronization
A badge in the Contacts tab indicates that new contacts have been added
Threema calls: A short vibration indicates that the other party has activated the camera (if in-app vibration is turned on)
When sharing individual media messages with other apps, captions can be maintained (and edited)
When editing images, the message recipient is displayed in the text input field
Catalan localization
Various other improvements and several bug fixes
