I’m sure you’ve heard about “What’s App”. If you haven’t, “What’s App” is an application available for smartphones such as the iPhone, Android, Windows Mobile, Blackberry and more. It allows you to send messages, similar to SMS, to friends who also use the same application. On the upside, it’s free of charge (you only need to pay for the internet traffic generated), on the downside it’s very insecure. But what are secure alternatives out there?