A researcher recently discovered a 'smart' sleep mask broadcasting users' brainwave data to a public, unencrypted MQTT broker. 🧠
This is a textbook example of why closed-source consumer IoT is a privacy nightmare. For sensitive health and biometric data, open-source software and local data control aren't just features—they are requirements.
Source: https://aimilios.bearblog.dev/reverse-engineering-sleep-mask/