I'm not at all sure Linux is the solution; the only plausible culprit for whom that would be a barrier is a non-state actor doing a modern variety of "Will no one rid me of this turbulent priest" (http://en.wikipedia.org/wiki/Thomas_Becket). But the reported sophistication of the attack makes that less likely that previously speculated, and I assume that "Linux" is not a high enough barrier to a state actor.