The New York Court of Appeals, its highest state court, approved in a 5-1 decision a search warrant that forces Facebook to turn over material on 381 accounts including account information, private photos, and conversations. This ruling is based significantly on New York law which the court interpreted to mean search warrants issued by judges cannot be appealed to a higher court and the proper venue for challenging search warrants is during a pretrial hearing when a party argues the search warrant is an illegal search.
Read more about this case in this New York Times article here. The underlying case deals with disability fraud and the Brennan Center provides a concise summary, along with its amicus brief, on its website available here.
One could argue that this opens the door to New York search warrants giving prosecutors access to users’ data on other social networking sites.
The full slip opinion is available here.