NBC: All Visitors to Sochi Olympics Immediately Hacked

What can we do to secure our wireless devices and our data from hackers?

In an increasingly digitally wireless, always connected world, it is almost certain that you will have a mobile device connected to a network that you have no control over.
From Starbucks to universities, grocery stores, shopping malls, book stores, hotels, conference centers...networks are everywhere and ready for you to connect.
What data is on that device? Personal information, family member's addresses, your children's pictures and birth dates, their school information, banking information, calendars and schedules...
All this information could be used to impersonate you, track you, know when you will be at work or soccer practice, and how often you download music from iTunes and pay your mortgage, or when your paycheck is deposited.