It’s only a matter of time until someone reverse engineers it. I wouldn’t be surprized, if Windows’es NSA backdoors were already discovered, but were patched out before hitting news. Or maybe someone is keeping it for themselves.

If you ask me: I think it could be activated via either a magic string from a verified IP address, or a malicious update from Microsoft that just turns on some features. I also think the telemetry services might be part of that.