Oops - had to look into this to figure out what it was. It's not sending any data that /I/ can see: (my end of) the unity analytics system doesn't even know the game exists. But unity (the company) seems to be collecting hardware data (for their own records, I presume) on all games by default — which I agree is sketchy as fuck. I've manually disabled everything I can find / find out about for future projects, and will do likewise with Autogeny if there's another patch.
Thanks for spotting that; I'm sorry I didn't catch it earlier.