Alexa, are you eavesdropping on me? I passive-aggressively ask my Amazon Echo this question every so often. Because as useful as AI has become, it's also very creepy. It's usually cloud-based, so it's often sending snippets of audio—or pictures from devices like “smart” doorbells—out to the internet. And this, of course, produces privacy nightmares, as when Amazon or Google subcontractors sit around listening to our audio snippets or hackers remotely spy on our kids.

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