Hmm.. so the US doesn't engage is cyber-hacking (or whatever the buzz phrase of the day is for this)? Or is it that we (the States) just haven't been caught yet?
As for Obama's threat to "retaliate".... I don't put a lot credence in that based on what I've seen the administration actually does. Besides the various TLA's are probably too busy grabbing all they can slurp from us citizens, allied citizens, and allied governments if all the news is to believed.