From the Wall Street Journal:
More consumers are buying smartphones, but they're not embracing mobile banking at the same pace -- mostly because they have a misplaced fear of it, according to several studies by research firm Javelin Strategy & Research.
Here are some tips to assuage fears
One tip was "be wary when choosing apps". This reminded me of what a friend described to me about an app he had downloaded for his smartphone. It was a voice recording app. His young son played around with the app by recorded screams. Even after those recordings were deleted, somehow they were being automatically played for no apparent reason when he was answering phone calls.