Many have tried. Steve Gibson (of GRC fame) did some wiresharking around one of his Amazon devices and found no abnormal networking traffic when he was talking to it, vs not.
I am pushing the boat out because I rely on my memory. But there were reports from Apple contractors about what they heard on Sirri. It is always on, always listening.
> But there were reports from Apple contractors about what they heard on Sirri. It is always on, always listening.
These 2 sentences may not necessarily need to both be true. As I recall, one could opt in (or was it opt-out?) to an Apple program to upload bits and pieces of spoken word for its people to parse "humanly" for it to improve its speech to text.
I'm no Apple fan, but I'm not sure one implies the other, here.
The same cannot be said for phone apps.