I'm skeptical that Amazon did this out of a genuine concern of IoT security. Seems more likely they wanted to be firmly at the center of all the data acquisition, and while they're no doubt more secure than the average IoT maker they can never be as secure as the act of not collecting the information in the first place. Their new interior security drones are next-level distopian. How long till we're avoiding the Half Life 2 drones inside our own homes?