If they saw that attacks were coming...
... couldn't they have just told Sony to prevent the whole mess from happening? Shouldn't the FBI be punished for not helping them when they could? I mean a simple warning like "this is a set of IP-adresses we expect attacks to come from" would have been enough, they wouldn't have had to give up any of their operational procedures or capabilities.
This whole thing doesn't quite add up if you assume the FBI is one of the good guys here. One plausible story might be that the FBI computers found out about it, but it was just somewhere in their database, or they did actually know about it, but let it happen in order to foster support for new surveillance laws. Keep in mind large organisations act like living beings. They might act in self defence.
Biting the hand that feeds IT
