Most of us don't answer calls or texts from strange numbers anyway, and this would be from an unknown caller. The likelihood of this happening is much less than one would think. I personally don't keep any usable information on my blackberry or my pc, for that matter. Also, I like to think that none of my information would interest anyone trying to intercept something. My contacts are either family, friends or customers who's cars I've worked on. pretty mundane.
Have you ever wondered why things intended to make our lives simpler keep getting more complicated to use?