They were scanning BLE so any device using that protocol in range would be picked up. Similar to seeing your neighbor's Wi-Fi router from your couch.

That has nothing to do with the MQTT broker.

> The first thing Claude did was scan for BLE (Bluetooth Low Energy) devices nearby. It found mine among 35 devices in range, connected, and mapped the interface -- two data channels. One for sending commands, one for streaming data.

Read the article before you unholster your weapon next time.

yes but https://aimilios.bearblog.dev/reverse-engineering-sleep-mask... reads like they connected to MQTT and received data from IOT devices on there, not using BLE

I’ve read the article. Sounds like you don’t understand the difference between MQTT and Bluetooth.