When I launch Skype, in comes the hackers. Luckily I have some trapwires (pardon my pun) and I caught this: 
https://www.robtex.com/ip/ (pictured, on November 23, 2013)
Today this IP appeared:
https://www.robtex.com/ip/ (on Dec 7, 2013)

Both appear to come from the provider "Voxility SRL"

These two Russian IP addresses attempt to "contact" my PC when I launch Skype... you are not as secure as I am, you are warned.