Since its acquisition of Skype in May 2011, Microsoft has added a legitimate
monitoring technology to Skype, says Maksim Emm, Executive Director of Peak
Systems. Now any user can be switched to a special mode in which encryption
keys will be generated on a server rather than the user's phone or computer.
Access to the server allows Skype calls or conversations to be tapped. Microsoft
has been providing this technology to security services across the world,
including Russia. http://www.themoscownews.com/russia/20130314/191336455/FSB-Russian-police-could-tap-
Skype-without--court-order.html