That's why nobody should be surprised that now and again applications that promise to provide us with the tools necessary to spy on the conversations of friends and strangers pop up out of the blue so that we can find out what they're talking about behind or back. And the most important channel of communication of our time also has to put with this problem: instant messaging and its undeniable leader, WhatsApp Messenger. Since the beginning of time, mankind has always managed to invent mechanisms to spy on his fellow humans and find out what is being said in conversations that have nothing to do with him.
