Some things you can do securing your iOT devices at Home.
First and formeost use Avast solutions to protect your Wifi.
I do and I haven't regret that decision since. Would not use my Android without it.
1. Do not take iOT devices to your workplace, for instance your Bluetooth music watch.
2. Create a separate guest network for iOT devices on your wifi home network.
2. a Check using Wireless Network Watcher for instance to see what's on there.
3. Only plug those devices into the network that you cannot do without.
4. Update, upgrade and patch the firmware of all iOT devices.
5. Disable UPnP, so your devices are not exposed on the Interwebs.
5.a Check for this using Shodan search engine for instance, or dork searches.
6. Alter the default passwords. Pick good secure passwords and hand a different one to all and every device.
7. Always be wary of cloud services and establish the security thereof. Use secure connections.
8. Keep your "landline"open in any case of a major emergency. Never trust anything outside your network.
9. Disable wifi and bluetooth services whenever there is no need for it.
Then these services should be off.
polonus