Pending appeal, Microsoft has refused to turn over emails stored in Ireland to the US government. If Microsoft loses on appeal, it'll have to turn over the emails however. This is a scary thing because it could mean that the reach of the US courts extend beyond our shores, and around the world. In the view of Microsoft and many legal experts, federal authorities have no jurisdiction over data stored in a foreign country, and this would violate the sovereignty of Ireland.
Leo thinks that companies like Microsoft and Apple will see this as an opportunity to fight for user privacy.