My Xiaomi devices (air purifiers) are on a different network, which I created specifically for sketchy "IoT" devices. It is physically separated, with separate

My Xiaomi devices (air purifiers) are on a different network, which I created specifically for sketchy "IoT" devices. It is physically separated, with separate addressing, and connected only at the exit router, where it is firewalled from the rest of my network. It doesn't mean Xiaomi doesn't learn everything about my air quality, temperature and humidity, but it at least decreases the attack surface.