Cell Phone Hijacking

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Someone just sent a video of a news clip about hijacking cell phones (http://www.youtube.com/watch?v=uCyKcoDaofg) to me. Evidently there's software that allows you to track someone's location, monitor text messages and phone calls, and even activate the microphone and listen in when they're not on the phone.

Scary stuff. Anyone know the best way to protect yourself from this type of software? ..or how to detect it?