I called a colleague using skype, not knowing he was in another skype session. His Skype Answering Machine picked up and I left a message. First the parties on the call with him heard me. Secondly, I heard them. Both calls were clear as a bell to the others. The bottom line is while this piece of software is not Skype’s own, how the program was able to clearly hear an and ease-drop on “encrypted” transmission is beyond my technical abilities, but it happened and the person on the other end told me too. But this begs the question of should you be using Skype for sensitive calls.