Reports this past few week suggest that Sky Italia is currently down on satellite cardsharing systems.
Cardsharing is a system where you can link one viewing card to a network of receivers, usually paying customers via the internet, to enable the viewing of pay tv channel without an official viewing card.
As cardsharing, the sale or and use of, is illegal, pay TV channels are always trying to improve their security to try and prevent this.
The reports from Italy are that Sky Italia have changed their encryption algorithm. This change has meant the loss of Sky Italia channel on cardsharing systems.