Since apparently someone still thinks this is news, here we go again: Microsoft had third parties listening* in on Xbox recordings, sometimes of children and sometimes of recordings that had been made by mistake.
I’ll repeat:
Any internet connected camera or microphone, or indeed any internet connected sensor (GPS, inertia, health-monitor), will leak sensitive personal information to the service providers.
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*) For those that are unclear on what happens when you have a human to listen in on recordings in order to improve the ML speech recognition, yes, they transcribe what they hear. How else could the speech recognition be improved?