“What are your risks in this era of surveillance, hacking and sloppy software coding? It depends. So what precautions should you be taking? Same answer: it depends. That’s a pretty unsatisfying bit of advice, isn’t it? Yet it’s a core truth of digital security. You should be concerned, very concerned, but in order to make decisions about your own security measures you should first figure out which threats you’re likely to face. Understanding what’s at risk – and that not all threats are equally daunting – is a key to how you should respond.”
http://www.rawstory.com/rs/2013/08/10/how-should-you-protect-yourself-from-cyber-surveillance/