WikiLeaks has already revealed that your private messages are not truly private and can be intercepted or snooped on by someone who really wants to do it and has the right tools at their disposal. Bearing that in mind, the experts and developers have started finding new ways to make the messages harder (and even impossible to crack) so that they can be kept away from the prying enthusiasts. The technology that is behind the development of such programs is usually referred to as ‘end to end encryption.’ This simply means that your message is encrypted even before it is sent and can only be decrypted after it has been received. This also means that anyone who has the eyes on your private communications will not be able to find anything semantically useful in your messages and hence they will remain safe.
But this new technology does come with its own set of challenges. Although this type of encryption is a standard, a layperson may find it extremely difficult to make it the part of their daily communications. This is why the developers are trying to figure out the way to integrate this encryption with an easy to use messaging service, which does not give hard time to the users.