Up until now more or less experienced hackers were able to find the IP address used by a Skype user only by knowing the account name. Hackers were able to attack their victims after knowing the IP addresses of them. This bug was first discovered in 2012.
Today, Skype has stopped working, starting at 8 am in France and no one could connect to Skype. Those who were online, could not see properly statuses and the refresh icon was always present. If you tried to give sign out thinking that a reconnection will fix the problem