Threema Work encrypts all messages, including control messages, using a highly secure end-to-end encryption method.</p> <p>Header information of messages (sender, recipient etc.) is protected by an additional encryption layer for transmission to the server, and from the server to the recipient, to prevent eavesdropping by third parties (e.g. in open wireless LANs).</p> <p>Neither Threema as the operator of the Threema servers nor your Organization have the ability to decrypt messages, as they have no knowledge of the private keys