Do you have a Chromecasts, Google Homes or SmartTVs?
If so, they can be exposed to the public internet and hackers can remotely play media on your device, rename it, factory reset or reboot the device, force it to forget all wifi networks, etc.
Consider disable UPnP on your router and if you're port forwarding ports 8008,8443 and 8009 STOP forwarding them.
