It's not like they hacked into Google's servers without their knowledge or consent, they were given access to the data. Obviously those who knew about it at Google were under gag orders, but one would hope that somebody involved would have the balls to leak the government's blatantly unconstitutional and illegal demands to the press regardless. Those gag orders wouldn't have held up in court if anybody at one of the PRISM companies had the conscience to go rogue. Every company involved in PRISM can be rightfully accused of colluding with the government to violate the basic 4th amendment rights of millions of people, knowingly and willingly.