For what it's worth Apple and Google denie it: http://www.cnbc.com/id/100797046
Plus, careful wording allows all sorts of out. Google says they don't provide a "back door", but this sort of thing could be defined as coming in the front door.
>Apple told CNBC, "We have never heard of PRISM. We do not >provide any government agency with direct access to our >servers, and any government agency requesting customer data >must get a court order."
They are not providing a back door, but it isn't the _means_ of providing information to the NSA that citizens are upset about, it is the 'providing information to the NSA' part.