This is a good move - it increases overall security from illegal and quasilegal actors. "A rising tide lifts all boats". While it might prevent certain kinds o

This is a good move - it increases overall security from illegal and quasilegal actors. "A rising tide lifts all boats". While it might prevent certain kinds of switcharoo ("let's exchange data on each other's citizens since we can't legally spy on our own citizens" maneuvers might be hampered), it still doesn't deal with an overly broad court order (c.f. Third Party doctrine). This does nothing against a duly authorized order from a legal entity. Those are threats that are very hard to deal with, in general. In order to ensure that privacy is maintained against overly broad and unreasonable legal searches, a non-technical (that is, political/legal) solution must be implemented. edit: Microsoft has been one of the voices calling for legal reform. I respect that. It might be a PR move, but still... I'll take it. :-)