Threema. The Secure Messenger Status

Threema is open source, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger.  Threema encrypts ALL your communications END-TO-END including messages, voice and video calls, group chats, media files and even status messages.  This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.  Threema is not only an encrypted and private messenger but also versatile and feature-rich. • Send any type of file (pdf, animated gif, mp3, doc, zip, etc.  Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments.  Threema uses the trusted open source NaCl cryptography library for encryption.  Threema is designed from the ground up to generate as little data on servers as possible.  The source code of the Threema app is open for everyone to review.  A phone number or email address is not required to use Threema.  Threema is fully compliant with the European privacy legislation (GDPR).  Each Threema user receives a random Threema ID for identification.  With Threema Web, you can also use Threema from your Desktop.  Local files are stored encrypted on your mobile phone or tablet.  Group memberships and contact lists are managed on your device only, and never stored on our servers.  The encryption keys are generated and safely stored on users’ devices to prevent backdoor access or copies.  On top of that, renowned experts are regularly commissioned to conduct systematic security audits of Threema’s code.