a nest camera is being used with my home and accounts allowing my devices to be compromised

[michel7500]

someone is using all my devices with a google home or nest app 

[MplsCustomer]

@michel7500 

I'm just another Google Nest customer, but the only way that someone could access your Google Nest cameras in the Google Nest app or Google Home app is if they know your username and password, or if they are a member of your Google Nest "household", or, possibly, if they are on the same Wi-Fi network.

What is happening that leads you to say "someone is using all my devices"?