All communication between the Mill app and your Mill WiFi heater takes place in our server on AWS (Amazon Web Services) based in Europe.
Each interaction between your Mill WiFi heater and our cloud uses an encryption (CBC AES) to prevent a potential breach during data transfer to the cloud. This is a secret symmetric-key algorithm for encryption. Simultaneously, to ensure the encryption (AES) is not hacked, the heater handles the encryption and updates the cloud to reduce the the risk of being hacked.
Furthermore, your personal password to the Mill