Are Google and Amazon spying on you?

AUSTIN (KXAN) — Voice-activated assistance like Google Home and Amazon Echo have exploded in popularity in the last year.  There are an estimated 8 million of them in use right now and some industry reports predict that number could triple by the end of the year.
The devices work by responding to a keyword like “Alexa” or “OK, Google.”
They’re convenient for us, but for the companies that sell them, they are the newest way to further their quest to know a