https://www.techdirt.com/articles/20180525/07525839907/amazon-alexa-instantaneously-justifies-years-surveillance-paranoia.shtml

I'll admit that I traditionally haven't been as paranoid as many people in regards to the surveillance powers of digital assistants like Amazon's Alexa or Google Home. Yes, putting an always-on microphone in your home likely provides a wonderful new target for intelligence agencies and intruders to spy on you. That said, it's not like a universe of internet of broken things or smart TVs aren't doing the same thing, before you even get to the problem with lax to nonexistent privacy standards governing the smartphone currently listening quietly in your pocket and tracking your every location.

That said, nobody should ever labor under the false impression that good opsec involves leaving always on, internet-connected microphones sitting everywhere around your house.