<p>(CNN) On the Internet, a truly private conversation is hard to come by.</p><p>Personal communications on apps, e-mail and social networks are very much an open book, and they leave a trail of personal data that can potentially be accessed by criminals, corporations and government agencies.</p><p>No wonder more and more people are using apps whose messages quickly disappear from phones once they've been read.</p><p>Take Wickr, a self-destructing messaging app that takes security very seriously. The free app has been available on iOS for a little more than a year and on Monday, it expanded its reach to a wider audience with an Android version.</p><p><a href="http://wtvr.com/2013/09/22/messaging-app-aims-to-be-a-safer-snapchat/">Keep reading...</a></p>